As the error was done by the god Indra, he grants Hanuman a wish that his entire body could be as robust as Indra's Vajra, and that his Vajra could also not damage him. In addition to Indra other gods have also granted him wishes: the God Agni granted Hanuman https://shrihanumanmandiraustralia.blogspot.com/2024/11/a-journey-through-sacred-temples-of.html