As the error was done through the god Indra, he grants Hanuman a would like that his system will be as solid as Indra's Vajra, Which his Vajra also can not hurt him. Together with Indra other gods have also granted him wishes: the God Agni granted Hanuman a want https://hanumanmandirsouthaustralia.movie.blog/2025/06/24/sacred-moments-and-spiritual-legacy-at-hanuman-ji-mandir/