1747 – ʿAbd Allah narrated to us; he said: My father narrated to me; Zayd ibn al-Hubab narrated to us; Khalid ibn Dinar informed us; he said: I heard Abu al-ʿAliyah say, “We used to consider it one of the gravest sins for a man to learn the Quran and then neglect it, going to sleep until he forgets it.”