As the mistake was finished because of the god Indra, he grants Hanuman a want that his human body might be as powerful as Indra's Vajra, and that his Vajra could also not harm him. In addition to Indra other gods have also granted him needs: the God Agni granted https://hindutempleinadelaide.blogspot.com/2024/07/embracing-teachings-of-lord-shanidev-at.html