Narrated Sa`id bin Al-Musaiyab's grand-father: In the pre-lslamic period of ignorance a flood of rain came and filled the valley in between the two mountains (around the Ka`ba).
Hadith ReferenceSahih Bukhari / The Merits of Al-Ansar / Hadith: 3833
Hadith Gradingمحدثین:أحاديث صحيح البخاريّ كلّها صحيحة