With this chain of transmission, from Muhammad ibn Ya'qub, from Al-Husayn ibn Muhammad, from Mu'alla ibn Muhammad, from Al-Washsha, from Aban ibn Uthman, from Abu Maryam. He said: I asked Abu Abdullah عليه السلام: "What do you say about the urine and dung of beasts of burden (load carrying animals)?" Imam عليه السلام said: "As for their urine, wash whatever it touches of you. But as for their dung, it is more common than that (and does not require washing)."