As the mistake was performed by the god Indra, he grants Hanuman a wish that his entire body might be as strong as Indra's Vajra, and that his Vajra also can not hurt him. In conjunction with Indra other gods have also granted him wishes: the God Agni granted Hanuman https://waylonmzkwg.tokka-blog.com/37331503/the-smart-trick-of-hanuman-that-nobody-is-discussing