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.
ahmad:15684ʿAbd al-Razzāq > Maʿmar > al-Zuhrī > ʿAbdullāh b. ʿĀmir b. Rabīʿah from his father

[Machine] "I saw the Messenger of Allah ﷺ praying the voluntary prayers on the back of his mount in every direction."  

أحمد:١٥٦٨٤حَدَّثَنَا عَبْدُ الرَّزَّاقِ قَالَ أَخْبَرَنَا مَعْمَرٌ عَنِ الزُّهْرِيِّ عَنْ عَبْدِ اللهِ بْنِ عَامِرِ بْنِ رَبِيعَةَ عَنْ أَبِيهِ قَالَ

رَأَيْتُ رَسُولَ اللهِ ﷺ يُصَلِّي عَلَى ظَهْرِ رَاحِلَتِهِ النَّوَافِلَ فِي كُلِّ جِهَةٍ  


See similar narrations below:

Collected by Bukhārī, Aḥmad, Ibn Ḥibbān, Suyūṭī
bukhari:1093ʿAlī b. ʿAbdullāh > ʿAbd al-Aʿlá > Maʿmar > al-Zuhrī > ʿAbdullāh b. ʿĀmir from his father

I saw the Prophet ﷺ offering the prayer on his mount (Rahila) whatever direction it took.  

البخاري:١٠٩٣حَدَّثَنَا عَلِيُّ بْنُ عَبْدِ اللَّهِ قَالَ حَدَّثَنَا عَبْدُ الأَعْلَى قَالَ حَدَّثَنَا مَعْمَرٌ عَنِ الزُّهْرِيِّ عَنْ عَبْدِ اللَّهِ بْنِ عَامِرٍ عَنْ أَبِيهِ قَالَ

رَأَيْتُ النَّبِيَّ ﷺ يُصَلِّي عَلَى رَاحِلَتِهِ حَيْثُ تَوَجَّهَتْ بِهِ  

ahmad:15686ʿAbd al-Aʿlá > Maʿmar > al-Zuhrī > ʿAbdullāh b. ʿĀmir b. Rabīʿah from his father

[Machine] "He saw the Messenger of Allah ﷺ praying on his mount wherever it turned."  

أحمد:١٥٦٨٦حَدَّثَنَا عَبْدُ الْأَعْلَى حَدَّثَنَا مَعْمَرٌ عَنِ الزُّهْرِيِّ عَنْ عَبْدِ اللهِ بْنِ عَامِرِ بْنِ رَبِيعَةَ عَنْ أَبِيهِ

أَنَّهُ رَأَى رَسُولَ اللهِ ﷺ يُصَلِّي عَلَى رَاحِلَتِهِ حَيْثُ تَوَجَّهَتْ بِهِ  

ذِكْرُ إِبَاحَةِ صَلَاةِ الْمَرْءِ إِلَى رَاحِلَتِهِ فِي الْفَضَاءِ عِنْدَ عَدَمِ الْعَنَزَةِ وَالسُّتْرَةِ

ibnhibban:2378al-Ḥasan b. Sufyān > Ibn Numayr > Abū Khālid al-Aḥmar > ʿUbaydullāh b. ʿUmar > Nāfiʿ > Ibn ʿUmar

[Machine] I saw the Messenger of Allah ﷺ praying towards his riding animal.  

ابن حبّان:٢٣٧٨أَخْبَرَنَا الْحَسَنُ بْنُ سُفْيَانَ قَالَ حَدَّثَنَا ابْنُ نُمَيْرٍ قَالَ حَدَّثَنَا أَبُو خَالِدٍ الْأَحْمَرُ عَنْ عُبَيْدِ اللَّهِ بْنِ عُمَرَ عَنْ نَافِعٍ عَنِ ابْنِ عُمَرَ قَالَ

«رَأَيْتُ رَسُولَ اللَّهِ ﷺ يُصَلِّي إِلَى رَاحِلَتِهِ»