As the mistake done by god Indra, he grants Hanuman a wish that his human body would be as sturdy as Indra’s Vajra, the place as his Vajra can also not harm him. In addition to Indra other gods have also granted him wishes: including God Agni granted Hanuman https://hairstylist05937.ja-blog.com/23732502/5-essential-elements-for-hanuman