What is the ruling on the urine and feces of animals whose flesh is lawful to eat?
Chapter on Praying with Impurity and Other Matters
Al-Mughni
Book of Prayer
Primary text
The urine and feces of animals whose flesh is lawful to eat are considered pure. This is the view understood from the statement of Al-Khiraqi, and it is the position of 'Ata, Al-Nakha'i, Al-Thawri, and Malik. Imam Malik stated that scholars do not consider the urine of those whose flesh is eaten and milk is drunk to be impure. Al-Zuhri and Yahya Al-Ansari permitted the urine of sheep. Ibn Al-Mundhir reported consensus among the scholars whose opinions we know that prayer is permissible in sheep folds. The primary evidence is that the Prophet (peace be upon him) commanded the 'Uraini people to drink the urine of camels, and impure matter is not permissible to drink. Furthermore, the Prophet (peace be upon him) prayed in sheep folds, and he commanded, 'Pray in the sheep folds,' which is agreed upon (Muttafaq 'alayh). The companions also prayed on the ground in places that were not free from sheep feces and urine, indicating they performed prayer while in direct contact with them.
Supporting text
The reasoning that supports purity is that this substance is a usual discharge from an animal whose flesh is eaten, thus it is pure, analogous to its milk. If it were impure, the grains trodden upon by cattle, which cannot be free from their urine, would become impure, leading to the mixing of impure matter with pure matter, thereby making the ruling of all of it impure.