Srimad Bhagavatam 12.06.26 - Sufferings of Devotees are GIFTS of Krishna (download mp3)
by Arvind Madhav Prabhu at ISKCON Chowpatty
pañcatvam ṛcchate jantur
bhuṅkta ārabdha-karma tat
When a conditioned soul is killed by snakes, thieves, fire, lightning, hunger, disease or anything else, he is experiencing the reaction to his own past work.
According to Śrīla Viśvanātha Cakravartī Ṭhākura, King Parīkṣit obviously was not suffering the reaction of past karma. As a great devotee he was personally brought back home, back to Godhead, by the Lord.