Sayyiduna Abdullah bin Umar (may Allah be pleased with them) narrates that (one day, for some need of mine) I climbed onto the roof of my sister and the noble wife of the Messenger of Allah (peace and blessings be upon him), Sayyidah Hafsah’s (may Allah be pleased with her) house, and I saw the Messenger of Allah (peace and blessings be upon him) relieving himself with his back towards the Qiblah and his face towards Shaam (Syria).