Sunan Ibn Majah 2363

It was narrated that Jabir bin Samurah said:'Umar bin Khattab addressed us at Jabiyah and said: “The Messenger of Allah (ﷺ) stood up among us as I stand among you, and said: 'Honor my Companions for my sake, then those who come after them, then those who come after them. Then lying will prevail until a man will give testimony without being asked to do so, and he will swear an oath without being asked to do so.' ”