The Messenger of Allah ﷺ said, "I and the Hour have been sent like this in relation to this," or "like these two," and he held his index finger and middle finger together.
قال رسول الله ﷺ: بعثت أنا والساعة كهذه من هذه أو كهاتين، وقرن بين السبابة والوسطى.
Bukhari narrated it in the Book of Divorce (5301), and Muslim in the Book of Tribulations (2950), both through routes from Abu Hazim, from Sahl bin Saad, who mentioned it. The wording given is Bukhari's.