As the mistake was carried out from the god Indra, he grants Hanuman a want that his human body could well be as sturdy as Indra's Vajra, and that his Vajra may not harm him. As well as Indra other gods have also granted him wishes: the God Agni granted https://adelaidehindutemple.blogspot.com/2024/12/hanuman-mandir-and-shani-dev-temple-in.html