Muhammad ibn al-Husayn ibn al-Fadl and Ubayd Allah ibn Ahmad informed us. They said: Al-Husayn ibn Yahya al-Mattuthi narrated to us. He said: Al-Hasan ibn Muhammad ibn al-Sabbah narrated to us. He said: Abu Mu'awiyah narrated to us. Al-A'mash narrated to us, from Shaqiq, who said: Abd Allah said: “Keep reviewing these copies of the Quran”—and he may at times have said, “the Quran”—“for it slips away from men’s hearts more swiftly than livestock from their tethers.” He said: The Messenger of Allah, peace and blessings be upon him, said: “Let none of you say, ‘I have forgotten such-and-such a verse.’ Rather, he has been made to forget…”