As the error was done from the god Indra, he grants Hanuman a want that his human body could well be as strong as Indra's Vajra, Which his Vajra can also not harm him. In addition to Indra other gods have also granted him wishes: the God Agni granted Hanuman https://shanidevmandirsydney.blogspot.com/2025/07/indian-mandir-in-adelaide-hanuman-ji.html