Who was the first one to conquer Persia?

Posted by

(a) Hazrat Abu Bakr bin Jarrah (RA)
(b) Hazrat Saad bin Abi Waqqas (RA)
(c) Hazrat Khalid bin Waleed (RA)
(d) Hazrat Usamah bin Zaid (RA)

See also  Two Angels are appointed on each person One of them maintains the good deeds and the other one records evil deeds. These two angels are known as -