As the error was accomplished via the god Indra, he grants Hanuman a want that his entire body can be as powerful as Indra's Vajra, and that his Vajra may not damage him. Together with Indra other gods have also granted him wishes: the God Agni granted Hanuman a want https://shanigodvahana.blogspot.com/2024/12/discover-spiritual-peace-at-hanuman.html