As the error was performed because of the god Indra, he grants Hanuman a wish that his human body will be as robust as Indra's Vajra, and that his Vajra may also not harm him. In addition to Indra other gods have also granted him needs: the God Agni granted https://hindutemplesouthaustralia.blogspot.com/2024/06/hanuman-mandir-adelaide-revered-hindu.html