(2) باب قَصْرِ الصَّلاَةِ بِمِنًى
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 (ﷺ) 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.
Reference: Sahih Muslim 695 a
In-book reference: Book 6, Hadith 27
USC-MSA web (English) reference(deprecated numbering scheme): Book 4, Hadith 1483