Muhammad ibn Ya‘qub, from Muhammad ibn al-Hasan and Ali ibn Muhammad, from Sahl ibn Ziyad, from Ibn Mahbub, from Ali ibn Ri'ab, from Jamil ibn Salih, from al-Fudayl ibn Yasar, who said: I said to Abu Abdillah عليه السلام, peace be upon him: "I stand for prayer and I see excrement (al-’adhirah) in front of me in the direction of the Qiblah." Imam عليه السلام said: "Move away from it as much as you can, and do not pray on the main roads (al-jawadd)."