Sahih Muslim Book 4, Hadith Number 1483.

Chapter : Compensation of the missed prayer and excellence of observing it promptly.

Ibrahim reported: I heard ‘Abd al-Rahman as saying; ‘Uthman led us four rak’ahs of prayer at Mina. It was reported to Abdullah b. Mas’ud and he recited: “Surely we are Allah’s and to Him shall we return,” and then said: I prayed with the Messenger of Allah (may peace be upon him) at Mina two rak’ahs of prayer. I prayed along with Abu Bakr al-Siddiq two rak’ahs of prayer at Mina. I prayed along with ‘Umar b. Khattab two rak’ahs of prayer at Mina. I wish I had my share of the two rak’ahs acceptable (to God) for the four rak’ahs.