As the error was finished because of the god Indra, he grants Hanuman a desire that his human body would be as solid as Indra's Vajra, Which his Vajra may not damage him. In conjunction with Indra other gods have also granted him needs: the God Agni granted Hanuman a https://indiantempleadelaide.health.blog/2024/06/14/discover-the-essence-of-hinduism-at-the-hanuman-mandir/