As the error was performed via the god Indra, he grants Hanuman a wish that his body can be as potent as Indra's Vajra, Which his Vajra might also not damage him. Coupled with Indra other gods have also granted him wishes: the God Agni granted Hanuman a want that https://hanumantemplessouthaustralia.blogspot.com/2024/11/exploring-adelaides-hindu-temples.html