As the error was performed because of the god Indra, he grants Hanuman a desire that his entire body could be as powerful as Indra's Vajra, Which his Vajra might also not hurt him. As well as Indra other gods have also granted him needs: the God Agni granted Hanuman https://cesaraqgvl.dailyblogzz.com/37541880/examine-this-report-on-hanuman