He wanted an explanation from Yama, the lord of death. Yama explained that the Kauravas had been allowed into heaven because they died as warriors on the battlefield. This earned them so much merit and credit that it wiped out all their debts. Yudhisthira demanded to know where his brothers and his wife were. He was then taken to hell. Yama explained that they were experiencing the reactions of their actions but it was temporary. Once the debt had been repaid, they would join them in Swarga. Yudhisthira loyally met his brothers, but the sight and sound of gore and blood horrified him. Though initially he was tempted to flee, he mastered himself and remained after hearing the voices of his beloved brothers and Draupadi calling out to him, asking him to stay with them in their misery. Yudhisthira decided to remain, ordering the divine charioteer to return. He preferred to live in hell with good people than in the heaven of his enemies. Eventually, this turned out to be another illusion to test him. Yama explained to Yudhishtira that it was all illusion created by Yama himself. It was a punishment to Yudhishtira to feel sad and soak tears on seeing his beloved ones being punished. It was because Drona felt sad on hearing fake news that his son was dead. Yudhishtira told the message incompletely due to which Drona felt sad and cried in grief. Because of this, Yudhishtira had to feel sad in a similar manner. Hence Yama created this illusion. In reality, Pandavas and Draupadi reached heaven just after their deaths. Yama explained everything and Yudhishtira reached heaven with his mortal body.Pandavas were the incarnation of previous Indra's.After the Duration, the lifespan of Indra, is completed Krishna assures Pandavas of offering them Moksha for their Devotion and purity.