As The mistake was carried out through the god Indra, he grants Hanuman a wish that his overall body could well be as strong as Indra's Vajra, and that his Vajra may also not hurt him. Along with Indra other gods have also granted him wishes: the God Agni granted https://hanuman-mandir-adelaide.mystrikingly.com/blog/sacred-moments-and-spiritual-legacy-at-hanuman-ji-mandir