Arabic (Original)
حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ حَدَّثَنَا شُعْبَةُ عَنْ عَبْدِ اللَّهِ بْنِ دِينَارٍ قَالَ رَأَيْتُ ابْنَ عُمَرَ يُصَلِّي حَيْثُ تَوَجَّهَتْ بِهِ رَاحِلَتُهُ وَيَقُولُ كَانَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَفْعَلُهُ.
English Translation
Muhammad ibn Ja'far told us, Shu'bah told us, from Abdullah ibn Dinar, who said: I saw Ibn Umar praying wherever his mount turned with him, and he would say: The Messenger of Allah, peace and blessings be upon him, used to do that.