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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:1094 – Abū Nuʿaym > Shaybān > Yaḥyá > Muḥammad b. ʿAbd al-Raḥman > Jābir b. ʿAbdullāh

The Prophet ﷺ used to offer the Nawafil, while riding, facing a direction other than that of the Qibla.  

البخاري:١٠٩٤ – حَدَّثَنَا أَبُو نُعَيْمٍ قَالَ حَدَّثَنَا شَيْبَانُ عَنْ يَحْيَى عَنْ مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ أَنَّ جَابِرَ بْنَ عَبْدِ اللَّهِ

أَخْبَرَهُ أَنَّ النَّبِيَّ ﷺ كَانَ يُصَلِّي التَّطَوُّعَ وَهْوَ رَاكِبٌ فِي غَيْرِ الْقِبْلَةِ