Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))

Bukhari :: Book 6 :: Volume 60 :: Hadith 387

Narrated Ibn Masud:

During the lifetime of Allah's Apostle the moon was split into two parts; one part remained over the mountain, and the other part went beyond the mountain. On that, Allah's Apostle said, "Witness this miracle."

Source materials are from the University of Southern California MSA site
Hadith eBooks converted from Imaan Star