As the error was completed via the god Indra, he grants Hanuman a desire that his entire body could well be as potent as Indra's Vajra, and that his Vajra may also not damage him. Together with Indra other gods have also granted him needs: the God Agni granted Hanuman https://daltonlifyx.blogzet.com/not-known-factual-statements-about-hanuman-51785291