Vishnupurana 1.20.p1.4

1.20.p1.4

Having smelt his forehead, embraced him and shed tears, the father said, "Dost thou live my child?" The Great Asura treated him with kindness and repented for his past actions. And Prahlāda, conversant with piety, attended diligently upon his father and preceptor. After his father had been slain by Vishnu in the form of the man-lion, he became, O Maitreya, the sovereign of the Daityas. And obtaining the splendours of royalty on account of piety, he came by immense wealth and was blessed, with a numerous progeny. At the expiration of the regal power and freed from the consequences of moral merit or demerit, he obtained, by virtue of his meditation of the deity final emancipation from future births. So powerful was the wise Daitya Prahlāda devoted to Vishnu, O Maitreya, about whom you asked me. Whoever listens to the story of Prahlāda, is speedily freed from all sins. Forsooth a man is released from the iniquities he commits day and night by once hearing or reading the history of Prahlāda. The reading of this history, on the day of full-moon, of new-moon or in the eighth and twelfth days of the lunar half month, shall offer fruit tantamount to the gift of a cow, O twice born one. As Hari protected Prahlāda in all his calamities so he shall protect him who constantly listens to his history.