كتاب الصيام
13  
The Book of Fasting
(40)
Chapter: The virtue of Lailat Al-Qadr and the Exhortation to seek it; When it is and the most likely times to seek it
(40)
باب فَضْلِ لَيْلَةِ الْقَدْرِ وَالْحَثِّ عَلَى طَلَبِهَا وَبَيَانِ مَحَلِّهَا وَأَرْجَى أَوْقَاتِ طَلَبِهَا
Sahih Muslim 1170

Abu Huraira (Allah be pleased with him) reported:

We were talking about Lailat-ul-Qadr in the presence of the Messenger of Allah (ﷺ) and he said: He who amongst you remembers (the night) when the moon arose and it was like a piece of plate (at the fag end of the month in a state of waning).
وَحَدَّثَنَا مُحَمَّدُ بْنُ عَبَّادٍ، وَابْنُ أَبِي عُمَرَ، قَالاَ حَدَّثَنَا مَرْوَانُ، - وَهُوَ الْفَزَارِيُّ - عَنْ يَزِيدَ، - وَهُوَ ابْنُ كَيْسَانَ - عَنْ أَبِي حَازِمٍ، عَنْ أَبِي هُرَيْرَةَ، - رضى الله عنه - قَالَ تَذَاكَرْنَا لَيْلَةَ الْقَدْرِ عِنْدَ رَسُولِ اللَّهِ صلى الله عليه وسلم فَقَالَ ‏ "‏ أَيُّكُمْ يَذْكُرُ حِينَ طَلَعَ الْقَمَرُ وَهُوَ مِثْلُ شِقِّ جَفْنَةٍ ‏"‏ ‏.‏
Reference : Sahih Muslim 1170
In-book reference : Book 13, Hadith 285
USC-MSA web (English) reference : Book 6, Hadith 2635
  (deprecated numbering scheme)