As the mistake was finished because of the god Indra, he grants Hanuman a want that his physique could be as strong as Indra's Vajra, Which his Vajra also can not harm him. Coupled with Indra other gods have also granted him needs: the God Agni granted Hanuman a wish https://knoxscipv.mybuzzblog.com/12449381/helping-the-others-realize-the-advantages-of-hanuman-aarti