As the error was carried out with the god Indra, he grants Hanuman a would like that his body would be as sturdy as Indra's Vajra, and that his Vajra also can not hurt him. In conjunction with Indra other gods have also granted him wishes: the God Agni granted https://panchmukhihanumanjinearme.blogspot.com/2024/07/experience-serenity-at-hanuman-mandir.html