From Sahih Bukhari (Hadith 3247):
Narrated Sahl bin Sa`d:The Prophet (ﷺ) said, "Verily! 70,000 or 700,000 of my followers will enter Paradise altogether; so that the first and the last amongst them will enter at the same time, and their faces will be glittering like the bright full moon
Reference: Bukhari 3247