صحیح ابن حبان
Ibn Hibban
كتاب الصلاة
Book of Prayer
فصل في الصلاة على الدابة - ذكر وصف الركوع والسجود للمتنفل على راحلته
Section on prayer on a riding animal – mentioning the description of bowing and prostration for one praying voluntarily on his mount
1 hadith
Hadith 2522
Salim narrates from his father (Sayyiduna Abdullah bin Umar) that I saw the Prophet Muhammad (peace be upon him) performing voluntary prayers on his mount during travel, and he was indicating (bowing and prostrating) with the movement of his head.