As The mistake was accomplished from the god Indra, he grants Hanuman a desire that his entire body can be as robust as Indra's Vajra, Which his Vajra can also not damage him. Coupled with Indra other gods have also granted him wishes: the God Agni granted Hanuman a wish https://staytunednewsscope.blogspot.com/2024/08/the-significance-of-hanuman-jayanti.html