The Book of Hajj
24/132. Chapter:
Placing One's Face and Chest On The Back Wall Of The Kabah
Sunan an-Nasai
أَخْبَرَنَا إِسْمَاعِيلُ بْنُ مَسْعُودٍ، قَالَ حَدَّثَنَا خَالِدٌ، عَنْ عَبْدِ الْمَلِكِ، عَنْ عَطَاءٍ، عَنْ أُسَامَةَ، قَالَ خَرَجَ رَسُولُ اللَّهِ صلى الله عليه وسلم مِنَ الْبَيْتِ صَلَّى رَكْعَتَيْنِ فِي قُبُلِ الْكَعْبَةِ ثُمَّ قَالَ " هَذِهِ الْقِبْلَةُ " .
It was narrated that Usmah said: "The Messenger of Allah came out of the House and prayed two Rakahs in front of the Kabah, then he said: 'This is the Qiblah.'"
Reference : Sunan an-Nasa'i 2916In-book reference : Book 24, Hadith 299English translation : Vol. 3, Book 24, Hadith 2919