What is the ruling on ablution water (Wudu) from standing water after urination?
Chapter on what purification is achieved with regarding water
Al-Mughni
Book of Purification
Primary text
The Prophet (peace be upon him) forbade urination into standing water and subsequently performing ablution from it, commanding this without distinguishing between small or large quantities. This indicates impurity results because the spreading of the impurity is not precluded.
Supporting text
The ruling derived from the general prohibition against urination in standing water is specifically restricted to urine according to one narration, because urine possesses a level of emphasis and dispersion in water that other impurities do not.