As the error was performed with the god Indra, he grants Hanuman a want that his body could well be as solid as Indra's Vajra, and that his Vajra can also not hurt him. In conjunction with Indra other gods have also granted him needs: the God Agni granted Hanuman https://daltonpolje.tusblogos.com/37379462/helping-the-others-realize-the-advantages-of-hanuman