As the error was carried out because of the god Indra, he grants Hanuman a want that his system will be as potent as Indra's Vajra, and that his Vajra might also not harm him. In conjunction with Indra other gods have also granted him needs: the God Agni granted https://connerbrhvl.spintheblog.com/33158324/hanuman-aarti-an-overview