As The mistake was carried out through the god Indra, he grants Hanuman a would like that his body can be as sturdy as Indra's Vajra, Which his Vajra could also not hurt him. As well as Indra other gods have also granted him wishes: the God Agni granted Hanuman https://sites.google.com/view/hindu-temple-south-australia/hanuman-mandir-and-shani-dev-temples-in-adelaide