As The error was accomplished by the god Indra, he grants Hanuman a desire that his body will be as sturdy as Indra's Vajra, Which his Vajra might also not damage him. Together with Indra other gods have also granted him wishes: the God Agni granted Hanuman a want that https://hanumanjimandir.food.blog/2025/02/17/the-significance-of-lord-hanuman-and-his-spiritual-presence-in-australia/