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 4866

Narrated Ibn `Abbas:

The moon was cleft asunder during the lifetime of the Prophet.

حَدَّثَنَا يَحْيَى بْنُ بُكَيْرٍ، قَالَ حَدَّثَنِي بَكْرٌ، عَنْ جَعْفَرٍ، عَنْ عِرَاكِ بْنِ مَالِكٍ، عَنْ عُبَيْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ عُتْبَةَ بْنِ مَسْعُودٍ، عَنِ ابْنِ عَبَّاسٍ ـ رضى الله عنهما ـ قَالَ انْشَقَّ الْقَمَرُ فِي زَمَانِ النَّبِيِّ صلى الله عليه وسلم‏.‏
Reference : Sahih al-Bukhari 4866
In-book reference : Book 65, Hadith 387
USC-MSA web (English) reference : Vol. 6, Book 60, Hadith 389
  (deprecated numbering scheme)