"One day I climbed on Hafsah's house, and I saw the Prophet relieving himself while facing Ash-Sham, with his back toward the Ka'bah." (Using translation from Tirmidhī 11)
رَقِيتُ يَوْمًا عَلَى بَيْتِ حَفْصَةَ فَرَأَيْتُ رَسُولَ اللهِ ﷺ عَلَى حَاجَتِهِ مُسْتَدْبِرَ الْبَيْتِ مُسْتَقْبِلَ الشَّامِ