Sahih Bukhari

Narrated Jabir bin `Abdullah:On the day of Al-Hudaibiya, Allah's Messenger (ﷺ) said to us' ""You are the best people on the earth!"" We were 1400 then. If I could see now, I would have shown you the place of the Tree (beneath which we gave the Pledge of Allegiance)."" Salim said, ""Our number was 1400.""