Abdullah (b. Umar) reported that Allahs Messenger ﷺ found, Umar bin al-Khattab amongst the riders and he was taking oath by his father Allahs Messenger ﷺ called them (saying): Our Allah, the Exalted and Majestic, has forbidden that you take oath by your father. He who has to take an oath, he must take it by Allah or keep quiet.