The Book of Prayers (Kitab Al-Salat) 
Muslim :: Book 4 : Hadith 1501
Ibn 'Umar reported: I saw the Messenger of Allah (may peace be upon him) praying (Nafl prayer) on a donkey's back while his face was turned towards Khaibar.
The Book of Prayers (Kitab Al-Salat)
Muslim :: Book 4 : Hadith 1501
Ibn 'Umar reported: I saw the Messenger of Allah (may peace be upon him) praying (Nafl prayer) on a donkey's back while his face was turned towards Khaibar.