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كتاب التفسير
65  
Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
(1)
"...And the moon has been cleft asunder (the people of Makkah requested Prophet Muḥammad pbuh to show them a miracle, so he showed them the splitting of the moon). And if they see a sign, they turn away..." (V.54:1,2)
(1)
Sahih al-Bukhari 4868

Narrated Anas:

The moon was cleft asunder into two parts.

حَدَّثَنَا مُسَدَّدٌ، حَدَّثَنَا يَحْيَى، عَنْ شُعْبَةَ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، قَالَ انْشَقَّ الْقَمَرُ فِرْقَتَيْنِ‏.‏
Reference : Sahih al-Bukhari 4868
In-book reference : Book 65, Hadith 389
USC-MSA web (English) reference : Vol. 6, Book 60, Hadith 391
  (deprecated numbering scheme)