As the mistake was performed by the god Indra, he grants Hanuman a want that his overall body could well be as strong as Indra's Vajra, and that his Vajra also can not damage him. In conjunction with Indra other gods have also granted him needs: the God Agni granted https://bomadirectory.com/listings609251/the-2-minute-rule-for-panchmukhi-hanuman