Vishnu Puran 30 (with English subtitle)

With the attempt to kill Prahlad, Sinhika herself gets burned and is dead. Fire god tells that boon should always be for the benefit and not to harm others. If done, it will become as curse. Angered on the death of his wife, Viprachitti wants to take revenge. Though Ahalad resists, he takes Prahlad and throws him into ocean. On request of Mother Laxmi, God Vishnu makes His lotus as bed for Prahlad. Unknown Kayatu pleeds to ocean god for her son.