In other Puranas, many variations of the boon are given. The Shiva Purana mentions that Hiranyakashipu asked Brahma that he would be invulnerable to dry or wet weapons, thunderbolts, mountains, trees, missiles or any form of weapon. The Vayu Purana mentions that Hiranyakashipu asked to be so powerful, only Vishnu would slay him. Other variations include not being slain by any living being, not at daytime or nighttime and not above or below.