'Abdullah b. 'Umar reported that the Messenger of Allah (ﷺ) used to observe Witr prayer on his ride.
Sahih Muslim Book 6, Hadith 48
← Previous Hadith 'Abdullah b. Dinar reported on the authority of Ibn 'Umar that the Messenger of Allah (ﷺ) used to observe prayer on his ride (no matter) in which direction it had its face turned. 'Abdullah b. Dinar said that Ibn 'Umar used to do like that.

Sahih Muslim Book 6, Hadith 47 Next Hadith → Salim b. 'Abdullah reported on the authority of his father that the Messenger of Allah (may peace be. upon him) used to observe Nafl (supererogatory) prayer on his ride no matter in what direction it turned its face, and he observed Witr too on it, but did not observe obligatory prayer on it.

Sahih Muslim Book 6, Hadith 49