As the error was performed because of the god Indra, he grants Hanuman a desire that his human body will be as sturdy as Indra's Vajra, and that his Vajra could also not harm him. Along with Indra other gods have also granted him needs: the God Agni granted Hanuman https://free-kundli44333.dailyhitblog.com/42458364/the-ultimate-guide-to-hanuman