Krishna and Arjuna in Battle field - Maha Bharatha Series 40

In Book 7, Section 27 is an episode which refers to Naraka Asura. This is described in the midst of the Kurukshetra battle. Jayadrata (?Vajradatta) was the king of Sindhu, and therefore was also called Saindhava. He was married to the only sister of the Kauravas, by name Dushala. Obviously, he was on the side of the Kauravas. He had special weapons and was therefore was not conquerable. He used one of them called Vaishnava against Arjuna. But, Krishna deflected it and accepted it on himself.

At this point, Arjuna asks Krishna: “You said that you will not enter the war yourself, but only help us. Why are you breaking your promise?” Krishna says: “I am of FOUR forms. One is in this world performing ascetic activities. One is here as an observer. One is involved in action. One is in the sleep mode for several years. When in that mode, I offer boons to the worthy. Once, when I woke up after 1000 years of sleep, Lady Earth asked for a boon. That was for a son who cannot be defeated by anyone but me. That was Naraka and he had this weapon, Vaishnava. No human can escape this weapon. Jayadrata got this weapon from Naraka. Now that he is using it and since you cannot escape it, I took it upon myself”.