As the mistake was completed because of the god Indra, he grants Hanuman a wish that his body can be as potent as Indra's Vajra, and that his Vajra can also not damage him. Together with Indra other gods have also granted him wishes: the God Agni granted Hanuman a https://www.evernote.com/shard/s419/sh/c3848c71-6862-0838-6da4-9fba5f7f1e8a/f0zpCEML9urmdze8mvX-WS6Mhch2pSuVEke_pL3lUOtjzhfCjyOo1Yi0Jw