Sahih al-Bukhari 6554
صحيح البخاري#6554SahihNarrated Sahl bin Sa`d:Allah's Messenger (ﷺ) said, "Seventy thousand or seven hundred thousand of my followers will enter Paradise. (Abu Hazim, the sub-narrator, is not sure as to which of the two numbers is correct.) They will be holding on to each other, the first will not entering the last one does, their faces like the moon on a full moon night
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 81:143