38 – ʿAbd Allah narrated to us; my father narrated to us; al-Ḥusayn ibn ʿAbd al-Raḥmān narrated to us, from Aḥmad ibn Abī al-Ḥawārī. ⦗51⦘ Abū Sulaymān transmitted it, from ʿAbd al-Waḥid ibn Zayd, who said:

“I once passed by a monk in his hermitage and said to my companions, ‘Stay here until I speak with him.’ When I approached, he said to me, ‘ʿAbd al-Waḥid, if you wish to attain knowledge that is certain, place between yourself and the passions of this world a wall of iron.’”