As the error was accomplished through the god Indra, he grants Hanuman a wish that his body might be as robust as Indra's Vajra, Which his Vajra could also not hurt him. As well as Indra other gods have also granted him wishes: the God Agni granted Hanuman a want https://hindutemplesouthaustralia.car.blog/2024/04/17/a-sanctuary-of-hindu-worship-and-community-spirit/