As the error was accomplished because of the god Indra, he grants Hanuman a want that his overall body can be as strong as Indra's Vajra, and that his Vajra could also not damage him. As well as Indra other gods have also granted him wishes: the God Agni granted https://shanitempleinadelaide.blogspot.com/2025/01/the-role-of-hanuman-temples-in.html