As the error was accomplished through the god Indra, he grants Hanuman a want that his physique would be as potent as Indra's Vajra, and that his Vajra may not hurt him. As well as Indra other gods have also granted him wishes: the God Agni granted Hanuman a desire https://www.tumblr.com/hanumanmandiradelaide/742853950777229312/embracing-devotion-hanuman-temple-in-adelaide