كتاب التفسير
65  
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
(15)
The Statement of Allah "Verily! We have seen the turning of your (Muhammad's ) face towards the heaven..." (V.2:144)
(15)
Sahih al-Bukhari 4489

Narrated Anas:

None remains of those who prayed facing both Qiblas (that is, Jerusalem and Mecca) except myself.

حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا مُعْتَمِرٌ، عَنْ أَبِيهِ، عَنْ أَنَسٍ ـ رضى الله عنه ـ قَالَ لَمْ يَبْقَ مِمَّنْ صَلَّى الْقِبْلَتَيْنِ غَيْرِي‏.‏
Reference : Sahih al-Bukhari 4489
In-book reference : Book 65, Hadith 16
USC-MSA web (English) reference : Vol. 6, Book 60, Hadith 16
  (deprecated numbering scheme)