As the mistake was accomplished via the god Indra, he grants Hanuman a wish that his physique can be as solid as Indra's Vajra, Which his Vajra may not hurt him. Together with Indra other gods have also granted him wishes: the God Agni granted Hanuman a wish that fire https://hindutemplesinadelaide.home.blog/2024/11/16/hindu-temple-in-adelaide-a-spiritual-sanctuary-for-the-community/