(Imām Bukhārī narrates): Abul Yaman narrated the hadith to us, he said: Shu'aib informed us, from az-Zuhri, he said: Salim bin Abdullah informed me, from Hazrat Ibn Umar (Allāh be pleased with them both),

that the Messenger of Allāh ﷺ used to offer voluntary prayer upon the back of the mount, whichever direction the mount faced, and he ﷺ used to gesture with his head, and Hazrat Ibn Umar (Allāh be pleased with them both) also used to do the same.