Musnad Ahmad Hadith 17758

It is narrated from Abdur Rahman bin Hasnah (may Allah be pleased with him) that once the Prophet (peace and blessings of Allah be upon him) came to us, and in his blessed hand was something like a leather shield. The Prophet (peace and blessings of Allah be upon him) placed it in front of himself as a screen and began to urinate while sitting. Someone said, "Look, the Prophet (peace and blessings of Allah be upon him) is urinating while sitting like women." The Prophet (peace and blessings of Allah be upon him) heard this and said, "Alas! Do you not know what happened to a man among the Children of Israel? If urine or something similar touched the bodies of the Children of Israel, they would cut off that part with scissors. A man forbade them from doing this, so he was subjected to the punishment of the grave."