As the error was done through the god Indra, he grants Hanuman a want that his physique could be as solid as Indra's Vajra, and that his Vajra may not harm him. In conjunction with Indra other gods have also granted him needs: the God Agni granted Hanuman a wish https://hanumantempleinadelaide.water.blog/2024/09/29/the-hanuman-mandir-spiritual-and-cultural-center-for-the-hindu/