حَدَّثَنَا عَبْدُ بْنُ حُمَيْدٍ، حَدَّثَنَا عَبْدُ الرَّزَّاقِ، عَنْ مَعْمَرٍ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، قَالَ سَأَلَ أَهْلُ مَكَّةَ النَّبِيَّ صلى الله عليه وسلم آيَةً فَانْشَقَّ الْقَمَرُ بِمَكَّةَ مَرَّتَيْنِ فَنَزَلَت ‏:‏ ‏(‏اقتَرَبَتِ السَّاعَةُ وَانْشَقَّ الْقَمَرُ ‏)‏ إِلَى قَوْلِهِ ‏:‏ ‏(‏سحْرٌ مُسْتَمِرٌّ ‏)‏ يَقُولُ ذَاهِبٌ ‏.‏ قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ ‏.‏

Narrated Anas: "The people of Makkah asked the Prophet (PBUH) for a sign, so the moon was cleft asunder in Makkah two times (meaning two parts), so the following was revealed: 'The Hour has drawn near, and the moon has been cleft asunder, up to his saying: 'Magic, Mustamir (54:1 & 2)' meaning 'Going away.'" Translation Not Available

Book Ref: Jamiya Tirmidhi Book 47 Hadith 3286
Web Ref:  Jamiya Tirmidhi Vol 5 Book 44 Hadith 3286