Bear testimony to this.  

انْشَقَّ الْقَمَرُ عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ بِشِقَّتَيْنِ فَقَالَ رَسُولُ اللَّهِ ﷺ اشْهَدُوا  

We were along with Messenger of Allah ﷺ at Mina, that moon was split up into two. One of its parts was behind the mountain and the other one was on this side of the mountain. Messenger of Allah (may peace be upbn him) said to us: Bear witness to this.  

بَيْنَمَا نَحْنُ مَعَ رَسُولِ اللَّهِ ﷺ بِمِنًى إِذَا انْفَلَقَ الْقَمَرُ فِلْقَتَيْنِ فَكَانَتْ فِلْقَةٌ وَرَاءَ الْجَبَلِ وَفِلْقَةٌ دُونَهُ فَقَالَ لَنَا رَسُولُ اللَّهِ ﷺ اشْهَدُوا  

Bear witness to this.  

انْشَقَّ الْقَمَرُ عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ فِلْقَتَيْنِ فَسَتَرَ الْجَبَلُ فِلْقَةً وَكَانَتْ فِلْقَةٌ فَوْقَ الْجَبَلِ فَقَالَ رَسُولُ اللَّهِ ﷺ اللَّهُمَّ اشْهَدْ  

Another chain of transmitters reported the like of this hadith.  

عَنِ النَّبِيِّ ﷺ مِثْلَ ذَلِكَ  

This hadith has been transmitted on the authority of Shu'ba with a slight variation of wording.  

اشْهَدُوا اشْهَدُوا  

Anas reported that the people of Mecca demanded from Messenger of Allah ﷺ that he should show them (some) signs (miracles) and he showed twice the splitting of the moon. This hadlth has been narrated on the authority of Anas through another chain of transmitters.  

أَنَّ أَهْلَ مَكَّةَ سَأَلُوا رَسُولَ اللَّهِ ﷺ أَنْ يُرِيَهُمْ آيَةً فَأَرَاهُمُ انْشِقَاقَ الْقَمَرِ مَرَّتَيْنِ وَحَدَّثَنِيهِ مُحَمَّدُ بْنُ رَافِعٍ حَدَّثَنَا عَبْدُ الرَّزَّاقِ أَخْبَرَنَا مَعْمَرٌ عَنْ قَتَادَةَ عَنْ أَنَسٍ بِمَعْنَى حَدِيثِ شَيْبَانَ  

" The moon was split up into two parts during the life of Messenger of Allah ﷺ."  

انْشَقَّ الْقَمَرُ فِرْقَتَيْنِ وَفِي حَدِيثِ أَبِي دَاوُدَ انْشَقَّ الْقَمَرُ عَلَى عَهْدِ رَسُولِ اللَّهِ ﷺ  

Ibn 'Abbas reported that the moon was split up during the lifetime of Messenger of Allah (may peace he upon him).  

إِنَّ الْقَمَرَ انْشَقَّ عَلَى زَمَانِ رَسُولِ اللَّهِ ﷺ