Sahih al-Bukhari 3833
صحيح البخاري#3833SahihNarrated Sa`id bin Al-Musaiyab's grand-father:In the pre-Islamic period of ignorance a flood of rain came and filled the valley in between the two mountains (around the Ka`ba)
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: 63:58