(2) باب الْحَالِ الَّتِي يَجُوزُ عَلَيْهَا اسْتِقْبَالُ غَيْرِ الْقِبْلَةِ
It was narrated that Ibn Umar said:
"The messenger of Allah (peace be upon him) used to pray atop his mount while travelling, facing whatever direction it was facing." (One of the narrators) Malik said: "Abdullah bin Dinar said: and Ibn Umar used to do likewise". (RU)
Reference (RU): Sunan an-Nasa'i 743 (RU)
In-book reference (RU): Book 9, Hadith 2 (RU)
English translation (RU): Vol. 1, Book 9, Hadith 744 (RU)