I heard the Messenger of Allah ﷺ say, "Before the Hour there will be liars."
سمعت رسول الله ﷺ يقول: إن بين يدي الساعة كذابين.
No references are available.
Muslim reported it in "The Book of Turmoil" (2923) through multiple routes from Simak (that is, Ibn Harb the Kufan) from Jabir bin Samura, who said, and he mentioned it.