I saw the Prophet ﷺ during the expedition of Anmar praying voluntary prayers on his mount, facing toward the east.
رأيت النبي ﷺ في غزوة أنمار يصلي على راحلته متوجها قبل المشرق متطوعا.
Bukhari reported it in al-Maghazi (4140), from Adam, who said, Ibn Abu Dhib told us, Uthman bin Abdullah bin Suraqa told us, from Jabir, and he related it.