As the error was carried out because of the god Indra, he grants Hanuman a want that his overall body could be as powerful as Indra's Vajra, and that his Vajra can also not hurt him. In conjunction with Indra other gods have also granted him wishes: the God Agni https://baglamukhi48371.ampblogs.com/helping-the-others-realize-the-advantages-of-hanuman-73698438