Musannaf Ibn Abi Shaybah

Hazrat Ata narrates that a man stood up from the presence of Hazrat Ibn Abbas (may Allah be pleased with them), so he asked him, "Where are you going?" He replied, "I am going to pour water." Hazrat Ibn Abbas (may Allah be pleased with them) said, "Do not say this; rather, say, 'I am going to urinate.'"

Hazrat Ibn Umar (may Allah be pleased with them both) considered it disliked for a person to say, while going to urinate, that "I am going to pour water."

Hazrat Umar said to a man, "Do not say that I am letting water flow, rather say that I am urinating."

Hazrat Abdullah considered it undesirable for anyone to say, "I am letting water flow."