As the error was accomplished with the god Indra, he grants Hanuman a want that his body can be as solid as Indra's Vajra, and that his Vajra may also not hurt him. Together with Indra other gods have also granted him needs: the God Agni granted Hanuman a desire https://hanumanjimandir.game.blog/2024/05/17/hanuman-mandir-a-spiritual-haven-in-south-australia/