As the error was carried out by the god Indra, he grants Hanuman a wish that his entire body will be as solid as Indra's Vajra, and that his Vajra could also not hurt him. Together with Indra other gods have also granted him wishes: the God Agni granted Hanuman https://hanumanhindutemplesaustralia.blogspot.com/2025/03/hanuman-mandir-sydney-and-adelaides.html