Sahih Muslim , Book 39, Hadith 6726 (USC-MSA) ⓘ
'Abdullah b. Mas'ud reported that the moon was split up in two parts during the lifetime of Allah's Messenger. The mountain covered one of its parts and one part of it was above the mountain and Allah's Messenger said: Bear witness to this.
حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ الْعَنْبَرِيُّ، حَدَّثَنَا أَبِي، حَدَّثَنَا شُعْبَةُ، عَنِ الأَعْمَشِ، عَنْ إِبْرَاهِيمَ، عَنْ أَبِي مَعْمَرٍ، عَنْ عَبْدِ اللَّهِ بْنِ مَسْعُودٍ، قَالَ انْشَقَّ الْقَمَرُ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم فِلْقَتَيْنِ فَسَتَرَ الْجَبَلُ فِلْقَةً وَكَانَتْ فِلْقَةٌ فَوْقَ الْجَبَلِ فَقَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " اللَّهُمَّ اشْهَدْ " .
also referenced under: Book 52, Hadith 29 (In-Book) & Hadith 2800 (Reference)
Another chain of transmitters reported the like of this hadith.
حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ مُعَاذٍ، حَدَّثَنَا أَبِي، حَدَّثَنَا شُعْبَةُ، عَنِ الأَعْمَشِ، عَنْ مُجَاهِدٍ، عَنِ ابْنِ عُمَرَ، عَنِ النَّبِيِّ صلى الله عليه وسلم مِثْلَ ذَلِكَ .
also referenced under: Book 52, Hadith 30 (In-Book) & Hadith 2801 (Reference)