It is narrated from Sayyiduna Sahl bin Sa'd (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Seventy thousand - or seven hundred thousand - of my Ummah will enter Paradise, holding on to one another, until the first and the last of them enter Paradise together. Their faces will be like the moon on the night of the full moon."
Hadith Referenceالمعجم الكبير للطبراني / باب السين / 5761