Inspired by Allah, Hazrat Mahdi (as) will know 'the best behavior for earning Allah's approval' and will act accordingly

(Inspired by Allah, Hazrat Mahdi (as) will know 'the best behavior for earning Allah's approval' and will act accordingly)
I said: “HOW WILL HAZRAT MAHDI (AS) KNOW HOW TO EARN ALLAH’S APPROVAL?” AND HE SAID: “ALLAH WILL INSTALL HIS MERCY IN HIS HEART.” (Sheikh Muhammad ibn Ibrahim Numani, al-Ghaybah al-Numani, p. 191)