Jami` at-Tirmidhi, Volume 5, Book 44, Hadith 2959 (DarusSalam) ⓘ
Narrated Anas: that 'Umar bin Al-Khattab said: "O Messenger of Allah! I wish that we could perform Salat behind the Maqam: So the following was revealed: And take you the Maqam of Ibrahim as a place of Salat. (2:125)."
حَدَّثَنَا عَبْدُ بْنُ حُمَيْدٍ، حَدَّثَنَا الْحَجَّاجُ بْنُ مِنْهَالٍ، حَدَّثَنَا حَمَّادُ بْنُ سَلَمَةَ، عَنْ حُمَيْدٍ، عَنْ أَنَسٍ، أَنَّ عُمَرَ، قَالَ يَا رَسُولَ اللَّهِ لَوْ صَلَّيْنَا خَلْفَ الْمَقَامِ فَنَزَلَتْ : (وَاتَّخِذُوا مِنْ مَقَامِ إِبْرَاهِيمَ مُصَلًّى ) . قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ .
also referenced under: Hadith 2959 (Reference) & Book 47, Hadith 3220 (In-Book)