Encyclopedia of Prophetic Hadiths

"Straighten your rows, for indeed, straightening the row is from the perfection of the prayer."

While we were in the mosque with the Messenger of Allah (may Allah's peace and blessings be upon him), a Bedouin came and began to urinate in the mosque. The Companions of the Messenger of Allah (may Allah's peace and blessings be upon him) said: Stop! Stop! He said: The Messenger of Allah (may Allah's peace and blessings be upon him) said: "Do not interrupt him; let him." So they left him until he finished urinating. Then the Messenger of Allah (may Allah's peace and blessings be upon him) called him and said to him: "These mosques are not appropriate for anything of this kind of urine or filth. They are only for the remembrance of Allah Almighty, prayer, and recitation of the Qur’an" or as the Messenger of Allah (may Allah's peace and blessings be upon him) said. He said: Then he ordered a man from among the people who brought a bucket of water and poured it over the affected area.

"The Hour will not be established until people boast about mosques."