Good Deed #323: Toilet- Sit and urinate
Aisha (may Allah be pleased with her) said: “Whoever tells you that the Prophet (peace and blessings of Allaah be upon him) used to urinate standing up, do not believe him. He only ever used to urinate sitting down.”[1]
Sahih al-Tirmidhi No. 11
Narrated Amr ibn al-‘As: AbdurRahman ibn Hasanah reported: I and Amr ibn al-‘As went to the Prophet (peace be upon him). He came out with a leather shield (in his hand). He covered himself with it and urinated. Then we said: Look at him. He is urinating as a woman does. The Prophet (peace be upon him), heard this and said: Do you not know what befell a person from amongst Banu Isra’il (the children of Israel)? When urine fell on them, they would cut off the place where the urine fell; but he (that person) forbade them (to do so), and was punished in his grave.
Abu Dawud 1:22
Abu Huraira said: When any one amongst you squats for answering the call of nature, he should neither turn his face towards the Qibla nor turn his back towards it.
Sahih Muslim 2:508