As the mistake was completed because of the god Indra, he grants Hanuman a wish that his entire body can be as potent as Indra's Vajra, and that his Vajra also can not damage him. Along with Indra other gods have also granted him wishes: the God Agni granted Hanuman https://baglamukhi48371.tblogz.com/the-smart-trick-of-hanuman-that-no-one-is-discussing-50338127