Ruling 77
It is disapproved to urinate while standing, on hard ground, in the nests and dens of animals, and in water – particularly stagnant water.
-Ayatullah Sistani, Practical Laws of Islam, Purification (Taharah)
Purity: Disliked Places and Manners of Urination
Practical Laws of Islam as per the teaching of Ayatullah Sistani
