It is narrated from Sayyiduna Zayd bin Arqam (may Allah be pleased with him); he said: We were with the Messenger of Allah (peace and blessings be upon him) on a journey during a military expedition when he (peace and blessings be upon him) said: "You are not even one part out of a hundred thousand parts of those who will come to me at the Pond (al-Hawd) on the Day of Resurrection." People asked Zayd: "How many were you that day?" He said: "Between seven hundred and eight hundred."
Hadith Referenceالمعجم الكبير للطبراني / باب الزاي / 4980