tasmin mahÄ-bhÄgavate
mahÄ-bhÄge mahÄtmani
hiraṇyakaÅ›ipÅ« rÄjann
akarod agham Ätmaje
tasmin - unto him; mahÄ-bhÄgavate - an exalted devotee of the Lord; mahÄ-bhÄge - most fortunate; mahÄ-Ätmani - whose mind was very broad; hiraṇyakaÅ›ipuḥ - the demon HiraṇyakaÅ›ipu; rÄjan - O King; akarot - performed; agham - very great sin; Ätma-je - to his own son.
When a demon like HiraṇyakaÅ›ipu, despite his elevated position due to severe austerities, begins to tease a devotee, he begins falling down, and the results of his austerities dwindle. One who oppresses a pure devotee loses all the results of his austerities, penances and pious activities. Since HiraṇyakaÅ›ipu was now inclined to chastise his most exalted devotee son, PrahlÄda MahÄrÄja, his opulences began dwindling.