2150 – ʿAbdullah narrated to us; my father narrated to me; Abu al-Jahm ʿAbd al-Quddus ibn Bakr narrated to us, from Muhammad ibn al-Nadr al-Harithi, who said:
“It used to be said: ‘The first stage of knowledge is to give it silent attention, then to listen attentively, then to memorize it, then to act upon it, and finally to disseminate it.’”