Abu Nuʿaym related to us; Zuhayr narrated; from Abu Ishaq, who said: He heard a man ask al-Aswad, “In the verse is it fa-hal min mu dhakkir or mu d dakkir?” Al-Aswad replied, “I heard ʿAbd Allah recite it as mud-dakkir, and he said, ‘I heard the Messenger of Allah ﷺ recite it as: fa-hal min mud-dakkir—with a dal (d).’”