Kurukshetra War and Bhagavad Gita :
Once battle seemed inevitable, Krishna offered both sides the opportunity to choose between having either his army called narayani sena or himself alone, but on the condition that he personally would not raise any weapon. Arjuna, on behalf of the Pandavas, chose to have Krishna on their side, and Duryodhana, Kaurava prince, chose Krishna's army. At the time of the great battle, Krishna acted as Arjuna's charioteer, since this position did not require the wielding of weapons.
Upon arrival at the battlefield, and seeing that the enemies are his family, his grandfather, his cousins and loved ones, Arjuna becomes doubtful about the fight. He lost all his hopes and put down his Gandiv (Arjuna's bow). Krishna then advises him about the battle, with the conversation soon extending into a discourse which was later compiled as the Bhagavad Gita.[64]
Krishna displays his Vishvarupa (Universal Form) to Arjuna on the battlefield of Kurukshetra.Krishna had a profound effect on the Mahabharata war and its consequences. He considered the Kurukshetra war as a last resort by voluntarily making himself as a messenger in order to establish peace between the Pandavas and Kauravas. But, once these peace negotiations failed and was embarked into the war, then he became a clever strategist. During the war, upon becoming angry with Arjun for not fighting in true spirit against his ancestors, Krishna once picked up a carriage wheel and converted it to a Chakra (discus) to challenge Bhishma when the latter injured him. Upon seeing this, Bhishma dropped his weapons and asked Krishna to kill him. However, Arjuna apologized to Krishna, promising that he would fight with full dedication here/after, and the battle continued. Krishna had directed Yudhisthira and Arjuna to return to Bhishma the boon of "victory" which he had given to Yudhisthira before the war commenced, since he himself was standing in their way to victory. Bhishma understood the message and told them the means through which he would drop his weapons—which was if a woman entered the battlefield. Next day, upon Krishna's directions, Shikhandi (Amba reborn) accompanied Arjuna to the battlefield and thus, Bhishma laid down his arms. This was a decisive moment in the war because Bhishma was the chief commander of the Kaurava army and the most formidable warrior on the battlefield. Krishna aided Arjuna in killing Jayadratha, who had held the other four Pandava brothers at bay while Arjuna's son Abhimanyu entered Drona's Chakravyuha formation—an effort in which he got killed by the simultaneous attack of eight Kaurava warriors. Krishna also caused the downfall of Drona, when he signalled Bhima to kill an elephant called Ashwatthama, the namesake of Drona's son. Pandavas started shouting that Ashwatthama was dead but Drona refused to believe them saying he would believe it only if he heard it from Yudhisthira. Krishna knew that Yudhisthira would never tell a lie, so he devised a clever ploy so that Yudhisthira wouldn't lie and at the same time Drona would be convinced of his son's death. On asked by Drona, Yudhisthira proclaimed
Ashwathama Hatahath, naro va Kunjaro vai.e. Ashwathama had died but he was nor sure whether it was a Drona's son or an elephant. But as soon as Yudhisthira had uttered the first line, Pandava army on Krishna's direction broke into celebration with drums and conchs, in the din of which Drona could not hear the second part of the Yudhisthira's declaration and assumed that his son indeed was dead. Overcome with grief he laid down his arms, and on Krishna's instruction Dhrishtadyumna beheaded Drona.
When Arjuna was fighting Karna, the latter's chariot's wheels sank into the ground. While Karna was trying to take out the chariot from the grip of the Earth, Krishna reminded Arjuna how Karna and the other Kauravas had broken all rules of battle while simultaneously attacking and killing Abhimanyu, and he convinced Arjuna to do the same in revenge in order to kill Karna. During the final stage of the war, when Duryodhana was going to meet his mother Gandhari for taking her blessings which would convert all parts of his body on which her sight falls to steel, Krishna tricks him to wearing banana leaves to hide his groin. When Duryodhana meets Gandhari, her vision and blessings fall on his entire body except his groin and thighs, and she becomes unhappy about it because she was not able to convert his entire body to steel. When Duryodhana was in a mace-fight with Bhima, Bhima's blows had no effect on Duryodhana. Upon this, Krishna reminded Bhima of his vow to kill Duryodhana by hitting him on the thigh, and Bhima did the same to win the war despite it being against the rules of mace-fight (since Duryodhana had himself broken Dharma in all his past acts). Thus, Krishna's unparalleled strategy helped the Pandavas win the Mahabharata war by bringing the downfall of all the chief Kaurava warriors, without lifting any weapon. He also brought back to life Arjuna's grandson Parikshit, who had been attacked by a Brahmastra weapon from Ashwatthama while he was in his mother's womb. Parikshit became the Pandavas' successor.
Later life :
Gandhari's Curse: According to Mahabharata, the Kurukshetra war resulted in the death of all hundred sons of Gandhari. On the night before Duryodhana's death, Lord Krishna visited Gandhari to offer his condolences. Gandhari felt that Krishna knowingly did not put an end to the war, and in a fit of rage and sorrow, Gandhari cursed that Krishna, along with everyone else from yadu dynasty, will perish after 36 years.[67][68][69] At a festival, a fight broke out between the Yadavas, who killed each other. His elder brother, Balarama, then gave up his body using Yoga. Krishna retired into the forest and started meditating under a tree. The Mahabharata narrates of the story of a hunter, named Jara, mistook Krishna's partly visible left foot for that of a deer, and shot an arrow wounding him mortally. Krishna's soul then ascended to heaven, while his mortal body was cremated by Arjuna.[70][71][72]
According to Puranic sources,[73] Krishna's disappearance marks the end of Dvapara Yuga and the start of Kali Yuga, which is dated to February 17/18, 3102 BCE.[74] Vaishnava teachers such as Ramanujacharya and Gaudiya Vaishnavas held the view that the body of Krishna is completely spiritual and never decays as this appears to be the perspective of the Bhagavata Purana. Krishna never appears to grow old or age at all in the historical depictions of the Puranas despite passing of several decades, but there are grounds for a debate whether this indicates that he has no material body, since battles and other descriptions of the Mahabhārata epic show clear indications that he seems to be subject to the limitations of nature.[75] While battles apparently seem to indicate limitations, Mahabharatha also shows in many places where Krishna is not subject to any limitations as through episodes Duryodhana trying to arrest Krishna where his body burst into fire showing all creation within him.[76] Krishna is also explicitly described as without deterioration elsewhere.
Upon arrival at the battlefield, and seeing that the enemies are his family, his grandfather, his cousins and loved ones, Arjuna becomes doubtful about the fight. He lost all his hopes and put down his Gandiv (Arjuna's bow). Krishna then advises him about the battle, with the conversation soon extending into a discourse which was later compiled as the Bhagavad Gita.[64]
Krishna displays his Vishvarupa (Universal Form) to Arjuna on the battlefield of Kurukshetra.Krishna had a profound effect on the Mahabharata war and its consequences. He considered the Kurukshetra war as a last resort by voluntarily making himself as a messenger in order to establish peace between the Pandavas and Kauravas. But, once these peace negotiations failed and was embarked into the war, then he became a clever strategist. During the war, upon becoming angry with Arjun for not fighting in true spirit against his ancestors, Krishna once picked up a carriage wheel and converted it to a Chakra (discus) to challenge Bhishma when the latter injured him. Upon seeing this, Bhishma dropped his weapons and asked Krishna to kill him. However, Arjuna apologized to Krishna, promising that he would fight with full dedication here/after, and the battle continued. Krishna had directed Yudhisthira and Arjuna to return to Bhishma the boon of "victory" which he had given to Yudhisthira before the war commenced, since he himself was standing in their way to victory. Bhishma understood the message and told them the means through which he would drop his weapons—which was if a woman entered the battlefield. Next day, upon Krishna's directions, Shikhandi (Amba reborn) accompanied Arjuna to the battlefield and thus, Bhishma laid down his arms. This was a decisive moment in the war because Bhishma was the chief commander of the Kaurava army and the most formidable warrior on the battlefield. Krishna aided Arjuna in killing Jayadratha, who had held the other four Pandava brothers at bay while Arjuna's son Abhimanyu entered Drona's Chakravyuha formation—an effort in which he got killed by the simultaneous attack of eight Kaurava warriors. Krishna also caused the downfall of Drona, when he signalled Bhima to kill an elephant called Ashwatthama, the namesake of Drona's son. Pandavas started shouting that Ashwatthama was dead but Drona refused to believe them saying he would believe it only if he heard it from Yudhisthira. Krishna knew that Yudhisthira would never tell a lie, so he devised a clever ploy so that Yudhisthira wouldn't lie and at the same time Drona would be convinced of his son's death. On asked by Drona, Yudhisthira proclaimed
Ashwathama Hatahath, naro va Kunjaro vai.e. Ashwathama had died but he was nor sure whether it was a Drona's son or an elephant. But as soon as Yudhisthira had uttered the first line, Pandava army on Krishna's direction broke into celebration with drums and conchs, in the din of which Drona could not hear the second part of the Yudhisthira's declaration and assumed that his son indeed was dead. Overcome with grief he laid down his arms, and on Krishna's instruction Dhrishtadyumna beheaded Drona.
When Arjuna was fighting Karna, the latter's chariot's wheels sank into the ground. While Karna was trying to take out the chariot from the grip of the Earth, Krishna reminded Arjuna how Karna and the other Kauravas had broken all rules of battle while simultaneously attacking and killing Abhimanyu, and he convinced Arjuna to do the same in revenge in order to kill Karna. During the final stage of the war, when Duryodhana was going to meet his mother Gandhari for taking her blessings which would convert all parts of his body on which her sight falls to steel, Krishna tricks him to wearing banana leaves to hide his groin. When Duryodhana meets Gandhari, her vision and blessings fall on his entire body except his groin and thighs, and she becomes unhappy about it because she was not able to convert his entire body to steel. When Duryodhana was in a mace-fight with Bhima, Bhima's blows had no effect on Duryodhana. Upon this, Krishna reminded Bhima of his vow to kill Duryodhana by hitting him on the thigh, and Bhima did the same to win the war despite it being against the rules of mace-fight (since Duryodhana had himself broken Dharma in all his past acts). Thus, Krishna's unparalleled strategy helped the Pandavas win the Mahabharata war by bringing the downfall of all the chief Kaurava warriors, without lifting any weapon. He also brought back to life Arjuna's grandson Parikshit, who had been attacked by a Brahmastra weapon from Ashwatthama while he was in his mother's womb. Parikshit became the Pandavas' successor.
Later life :
Gandhari's Curse: According to Mahabharata, the Kurukshetra war resulted in the death of all hundred sons of Gandhari. On the night before Duryodhana's death, Lord Krishna visited Gandhari to offer his condolences. Gandhari felt that Krishna knowingly did not put an end to the war, and in a fit of rage and sorrow, Gandhari cursed that Krishna, along with everyone else from yadu dynasty, will perish after 36 years.[67][68][69] At a festival, a fight broke out between the Yadavas, who killed each other. His elder brother, Balarama, then gave up his body using Yoga. Krishna retired into the forest and started meditating under a tree. The Mahabharata narrates of the story of a hunter, named Jara, mistook Krishna's partly visible left foot for that of a deer, and shot an arrow wounding him mortally. Krishna's soul then ascended to heaven, while his mortal body was cremated by Arjuna.[70][71][72]
According to Puranic sources,[73] Krishna's disappearance marks the end of Dvapara Yuga and the start of Kali Yuga, which is dated to February 17/18, 3102 BCE.[74] Vaishnava teachers such as Ramanujacharya and Gaudiya Vaishnavas held the view that the body of Krishna is completely spiritual and never decays as this appears to be the perspective of the Bhagavata Purana. Krishna never appears to grow old or age at all in the historical depictions of the Puranas despite passing of several decades, but there are grounds for a debate whether this indicates that he has no material body, since battles and other descriptions of the Mahabhārata epic show clear indications that he seems to be subject to the limitations of nature.[75] While battles apparently seem to indicate limitations, Mahabharatha also shows in many places where Krishna is not subject to any limitations as through episodes Duryodhana trying to arrest Krishna where his body burst into fire showing all creation within him.[76] Krishna is also explicitly described as without deterioration elsewhere.