Sahih al-Bukhari 6521
صحيح البخاري#6521SahihNarrated Sahl bin Sa`d:I heard the Prophet (ﷺ) saying, "The people will be gathered on the Day of Resurrection on reddish white land like a pure loaf of bread (made of pure fine flour)." Sahl added: That land will have no landmarks for anybody (to make use of)
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: 81:110