سُنَنُ النَّسَائِيِّ
Sunan an-Nasa’i 1688
The Book of Qiyam Al-Lail (The Night Prayer) and Voluntary Prayers During the Day
Witr on one's mount
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا مَالِكٌ، عَنْ أَبِي بَكْرِ بْنِ عُمَرَ بْنِ عَبْدِ الرَّحْمَنِ بْنِ عَبْدِ اللَّهِ بْنِ عُمَرَ بْنِ الْخَطَّابِ، عَنْ سَعِيدِ بْنِ يَسَارٍ، قَالَ قَالَ لِي ابْنُ عُمَرَ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم كَانَ يُوتِرُ عَلَى الْبَعِيرِ .
It was narrated that Sa'eed bin Yasir said: "Ibn Umar said to me that the Messenger of Allah (ﷺ) used to pray witr on a camel."
Sunan an-Nasa'i, 1688Sahih (Darussalam)