Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
bukhari:4489 – ʿAlī b. ʿAbdullāh > Muʿtamir from his father > Anas

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

البخاري:٤٤٨٩ – حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ حَدَّثَنَا مُعْتَمِرٌ عَنْ أَبِيهِ عَنْ أَنَسٍ ؓ قَالَ

لَمْ يَبْقَ مِمَّنْ صَلَّى الْقِبْلَتَيْنِ غَيْرِي  

See similar narrations below:

Collected by Nasāʾī's Kubrá
nasai-kubra:10938 – Isḥāq b. Ibrāhīm > Yaḥyá b. Ādam > Abū Zubayd > Sulaymān al-Taymī > Anas

[Machine] "No one left who prayed both directions except me."  

الكبرى للنسائي:١٠٩٣٨ – أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ أَخْبَرَنَا يَحْيَى بْنُ آدَمَ حَدَّثَنَا أَبُو زُبَيْدٍ عَنْ سُلَيْمَانَ التَّيْمِيِّ عَنْ أَنَسٍ قَالَ

«مَا بَقِيَ أَحَدٌ صَلَّى الْقِبْلَتَيْنِ غَيْرِي»