Arabic (Original)
حَدَّثَنَا عَبْدُ الرَّزَّاقِ عَنْ مَعْمَرٍ عَنْ يَحْيَى بْنِ أَبِي كَثِيرٍ عَنْ مُحَمَّدِ بْنِ عَبْدِ الرَّحْمَنِ بْنِ ثَوْبَانَ عَنْ جَابِرِ بْنِ عَبْدِ اللَّهِ قَالَ كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يُصَلِّي عَلَى رَاحِلَتِهِ تَطَوُّعًا حَيْثُ تَوَجَّهَتْ بِهِ فِي السَّفَرِ فَإِذَا أَرَادَ أَنْ يُصَلِّيَ الْمَكْتُوبَةَ نَزَلَ عَنْ رَاحِلَتِهِ وَاسْتَقْبَلَ الْقِبْلَةَ.
English Translation
'Abd al-Razzaq told us, from Ma'mar, from Yahya ibn Abi Kathir, from Muhammad ibn 'Abd al-Rahman ibn Thawban, from Jabir ibn 'Abdullah, who said: The Messenger of Allah, peace and blessings be upon him, used to pray voluntary prayers on his mount, wherever it turned, during travel, but when he wanted to pray the obligatory prayer, he would dismount from his mount and face the qibla.