Sayyiduna Jabir bin Abdullah (may Allah be pleased with them both) says: We were fourteen hundred in number at al-Hudaybiyah. The Messenger of Allah (peace and blessings be upon him) said: "Today you are better than everyone who is on the earth." Sayyiduna Jabir (may Allah be pleased with them both) said: If only I had my eyesight, I would show you the place of the tree.
(b) It is narrated from Sayyiduna Ma'qil bin Yasar (may Allah be pleased with him) that we were fourteen hundred; this is also the view of the scholars of the military expeditions (maghazi), and that on the day of Khaybar he (peace and blessings be upon him) made the division for two hundred horses.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب قسم الفيء والغنيمة / 12870