I went up to the roof of Hafsa's house for some job and I saw Messenger of Allah 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).  

ارْتَقَيْتُ فَوْقَ ظَهْرِ بَيْتِ حَفْصَةَ لِبَعْضِ حَاجَتِي فَرَأَيْتُ رَسُولَ اللَّهِ ﷺ يَقْضِي حَاجَتَهُ مُسْتَدْبِرَ الْقِبْلَةِ مُسْتَقْبِلَ الشَّأْمِ  

Once I went up the roof of our house and saw Messenger of Allah ﷺ answering the call of nature while sitting over two bricks facing Baitul-Maqdis (Jerusalem). (See Hadith No. 147).  

أَخْبَرَهُ قَالَ لَقَدْ ظَهَرْتُ ذَاتَ يَوْمٍ عَلَى ظَهْرِ بَيْتِنَا فَرَأَيْتُ رَسُولَ اللَّهِ ﷺ قَاعِدًا عَلَى لَبِنَتَيْنِ مُسْتَقْبِلَ بَيْتِ الْمَقْدِسِ