As The error was performed via the god Indra, he grants Hanuman a want that his system might be as powerful as Indra's Vajra, Which his Vajra also can not damage him. In conjunction with Indra other gods have also granted him wishes: the God Agni granted Hanuman a desire https://indiantempleadelaide.tech.blog/2024/05/17/hanuman-mandir-a-spiritual-haven-in-south-australia/