As the error was performed from the god Indra, he grants Hanuman a would like that his entire body would be as robust as Indra's Vajra, and that his Vajra also can not damage him. In conjunction with Indra other gods have also granted him wishes: the God Agni granted https://hanumantemplessydney.blogspot.com/2025/01/exploring-spiritual-essence-of-hanuman.html