As the error was performed by the god Indra, he grants Hanuman a would like that his overall body will be as potent as Indra's Vajra, Which his Vajra could also not hurt him. In addition to Indra other gods have also granted him wishes: the God Agni granted Hanuman https://hanumanmandirsouthaustralia.travel.blog/2024/07/12/the-universal-appeal-of-lord-shanidev/