Musnad Ahmad 535:4

Hassan narrated to us, Ibn Lahi'ah narrated to us, Sulayman ibn Ziyad al-Hadrami narrated to us, that he heard Abdullah ibn al-Harith ibn Juz' al-Zubaydi, a companion of the Prophet, may God bless him and grant him peace, saying: "The Messenger of God, may God bless him and grant him peace, forbade any of us to urinate while facing the Qibla."