As the mistake was completed through the god Indra, he grants Hanuman a wish that his system will be as powerful as Indra's Vajra, Which his Vajra may not hurt him. As well as Indra other gods have also granted him wishes: the God Agni granted Hanuman a want that https://shanimandirinadelaide.blogspot.com/2024/07/the-power-and-influence-of-lord-shanidev.html