As the error was completed through the god Indra, he grants Hanuman a desire that his entire body will be as sturdy as Indra's Vajra, and that his Vajra could also not hurt him. In addition to Indra other gods have also granted him needs: the God Agni granted Hanuman https://hanumanmandiradelaide.finance.blog/2024/03/29/exploring-the-shani-dev-mandir-in-adelaide/