حَدَّثَنَا عَلِيٌّ، حَدَّثَنَا سُفْيَانُ، أَخْبَرَنَا ابْنُ أَبِي نَجِيحٍ، عَنْ مُجَاهِدٍ، عَنْ أَبِي مَعْمَرٍ، عَنْ عَبْدِ اللَّهِ، قَالَ انْشَقَّ الْقَمَرُ وَنَحْنُ مَعَ النَّبِيِّ صلى الله عليه وسلم فَصَارَ فِرْقَتَيْنِ، فَقَالَ لَنَا ‏"‏ اشْهَدُوا، اشْهَدُوا ‏"‏‏.‏

Narrated `Abdullah: The moon was cleft asunder while we were in the company of the Prophet, and it became two parts. The Prophet (PBUH) said, Witness, witness (this miracle). Translation Not Available

Book Ref: Sahih Bukhari Book 65 Hadith 4865
Web Ref:  Sahih Bukhari Vol 6 Book 60 Hadith 388