As the mistake was completed by the god Indra, he grants Hanuman a would like that his system will be as strong as Indra's Vajra, Which his Vajra also can not harm him. Coupled with Indra other gods have also granted him wishes: the God Agni granted Hanuman a wish https://hindutemplesadelaide.blogspot.com/2024/07/experience-serenity-at-hanuman-mandir.html