When the Prophet Moses (as) learned of the virtue of Hazrat Mahdi (as), he prayed to Allah to be Hazrat Mahdi (as)

From Salim al-Ashal:

“WHEN THE PROPHET MOSES (AS) SAW THE MIGHT BESTOWED ON AND THE VIRTUE OF THE QAIM OF MUHAMMAD (SAAS) [HAZRAT MAHDI (AS)] IN THE FIRST PART OF THE TORAH HE SAID” “MY LORD, MAKE ME HAZRAT MAHDI (AS).”This was told to him: The truth is that Hazrat Mahdi (as) is from the line of Ahmad [of our Prophet (saas)]. 

THEN LOOKING AT THE SECOND PART OF THE TORAH HE SAW THE SAME THING. HE REPEATED THE SAME WORDS AND WAS GIVEN THE SAME ANSWER. AND WHEN HE SAW THE SAME THING IN THE THIRD PART HE AGAIN REPEATED THE SAME WORDS AND WAS AGAIN GIVEN THE SAME ANSWER.” (Sheikh Muhammad ibn Ibrahim Numani, al-Ghaybah al-Numani, p. 280)
 

So do not obey the kafirun but use this to battle against them with all your might. (Surah al-Furqan, 52)

Those who who did good and had taqwa among those who responded to Allah and the Messenger after the wound had been inflicted will have an immense reward. (Surah Al’Imran, 172)