As the error was finished by the god Indra, he grants Hanuman a want that his human body might be as strong as Indra's Vajra, and that his Vajra may also not harm him. As well as Indra other gods have also granted him needs: the God Agni granted Hanuman https://messiahmaqet.bloggactif.com/38437321/not-known-details-about-hanuman