As the mistake was carried out because of the god Indra, he grants Hanuman a wish that his entire body could well be as robust as Indra's Vajra, Which his Vajra may also not harm him. As well as Indra other gods have also granted him needs: the God Agni https://jeffreymxddd.sharebyblog.com/36734929/helping-the-others-realize-the-advantages-of-hanuman