As the error was done with the god Indra, he grants Hanuman a wish that his human body might be as strong as Indra's Vajra, Which his Vajra can also not hurt him. Along with Indra other gods have also granted him needs: the God Agni granted Hanuman a desire https://baglamukhimalamantra27159.wizzardsblog.com/36947595/the-fact-about-hanuman-that-no-one-is-suggesting