(14) باب التَّبَرُّزِ فِي الْبُيُوتِ
Narrated `Abdullah bin `Umar:
I went up to the roof of Hafsa's house for some job and I saw Allah's Messenger (ﷺ) answering the call of nature facing Sham (Syria, Jordan, Palestine and Lebanon regarded as one country) with his back towards the Qibla. (See Hadith No. 147).
Reference: Sahih al-Bukhari 148
In-book reference: Book 4, Hadith 14
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 4, Hadith 150