As the mistake was accomplished from the god Indra, he grants Hanuman a desire that his system will be as potent as Indra's Vajra, and that his Vajra might also not harm him. Together with Indra other gods have also granted him needs: the God Agni granted Hanuman a desire https://theidirectory.com/listings13296112/the-single-best-strategy-to-use-for-hanuman