ʿAbd Allah said: “Muhammad ibn ʿAbd al-Wahhab wrote to me: ‘I heard ʿAli ibn Ghannam al-Kilabi relate that ʿAmir ibn ʿAbd Qays said, “When your ʿaql (reason) restrains you from what is inappropriate, then you are truly intelligent.” ʿAli added, “It is called ʿaql because it resembles the ʿiqāl, the hobble placed on a camel.”’