حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ، حَدَّثَنَا مُعْتَمِرٌ، عَنْ أَبِيهِ، عَنْ أَنَسٍ ـ رضى الله عنه ـ قَالَ لَمْ يَبْقَ مِمَّنْ صَلَّى الْقِبْلَتَيْنِ غَيْرِي‏.‏

Narrated Anas: None remains of those who prayed facing both Qiblas (that is, Jerusalem and Mecca) except myself. Translation Not Available

Book Ref: Sahih Bukhari Book 65 Hadith 4489
Web Ref:  Sahih Bukhari Vol 6 Book 60 Hadith 16