As the mistake was completed because of the god Indra, he grants Hanuman a desire that his body can be as strong as Indra's Vajra, and that his Vajra could also not hurt him. As well as Indra other gods have also granted him needs: the God Agni granted Hanuman https://rafaellmido.post-blogs.com/57749855/the-smart-trick-of-hanuman-that-nobody-is-discussing