It was narrated that Jábir bin ‘Abdullâh said: “The Messenger of Allah P.B.U.H forbade us to urinate while standing.” (Da’if)
I heard Muhammad bin Yazid, Abu ‘Abdullâh, say: “I heard Ahmad bin ‘Abdur-Rahman Al-Makhzumi say: ‘Sufyân AthThawri said concerning the Hadith of ‘Aishah — ‘I (always) saw him urinating whilst sitting down’ — a man knows more about that (about such matters) than she.’ Ahmad bin ‘AbdurRahmân said: ‘It was the custom of the Arabs to urinate standing up. Do you not see that in the Hadith of ‘Abdur-Rahmân bin Hasanah it was said: ‘He sits down to urinate as a woman does.’