(5) باب الرُّخْصَةِ فِي ذَلِكَ
Narrated 'Abd Allaah b. 'Umar :
I ascended the roof of the house and saw the Apostle of Allaah ( sal Allaahu alayhi wa sallam) sitting on two bricks facing Jerusalem (Bait al-Maqdis) for relieving himself.
Reference: Sunan Abi Dawud 12
In-book reference: Book 1, Hadith 12
English translation: Book 1, Hadith 12