Ubaidullah bin 'Umar bin Hafs عبيد الله بن عمر بن حفص بن عاصم · The Chapters on Rulings

two men referred a dispute to the Messenger of Allah (ﷺ) concerning an animal, and neither of them had proof, so he ruled that it should be divided in half.

'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.' ”