From Sahih Muslim (Hadith 4811):
It has been narrated (through a different chain of transmitters) on the authority of Jabir who said:We were one thousand and four hundred on the Day of Hudaibiya when the Prophet (ﷺ) said to us: Today you are the best people on the earth. And Jabir said: If I had the eyesight, I could show you the place of the tree
Reference: Muslim 4811