As the error was finished because of the god Indra, he grants Hanuman a desire that his human body will be as potent as Indra's Vajra, Which his Vajra may not harm him. As well as Indra other gods have also granted him needs: the God Agni granted Hanuman a https://louisqstth.madmouseblog.com/17609208/5-simple-statements-about-hanuman-explained