Sahih Bukhari Volume 4, Book 53, Hadith Number 334.Sahih Bukhari Book 53. One-Fifth Of Booty to the Cause Of Allah (Khumus) Narated By ‘Abdullah bin ‘Umar : Once I went upstairs in Hafsa’s house and saw the Prophet answering the call of nature with his back towards the Qibla and facing Sham. Related Previous Post Sahih Bukhari Volume 4, Book 53, Hadith Number 335. Next Post Sahih Bukhari Volume 4, Book 53, Hadith Number 333.