Sahih Muslim 1166
Sahih Muslim · Book 13: The Book of Fasting · The virtue of Lailat Al-Qadr and the Exhortation to seek it; When it is and the most likely times to seek it
Abu Huraira (Allah be pleased with him) reported Allah's Messenger (ﷺ) as saying:
حَدَّثَنَا أَبُو الطَّاهِرِ ، وَحَرْمَلَةُ بْنُ يَحْيَى ، قَالاَ أَخْبَرَنَا ابْنُ وَهْبٍ ، أَخْبَرَنِي يُونُسُ ، عَنِ ابْنِ شِهَابٍ ، عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ ، عَنْ أَبِي هُرَيْرَةَ ، - رضى الله عنه - أَنَّاللَّهِ صلى الله عليه وسلم قَالَ " أُرِيتُ لَيْلَةَ الْقَدْرِ ثُمَّ أَيْقَظَنِي بَعْضُ أَهْلِي فَنُسِّيتُهَا فَالْتَمِسُوهَا فِي الْعَشْرِ الْغَوَابِرِ " . وَقَالَ حَرْمَلَةُ " فَنَسِيتُهَا " .
I was shown Lailat-ul-Qadr; then some members of my family awoke me up, then I was caused to forget it. So seek it in the last week. Harmala said: (The Prophet did not say:" I was made to forget," but he stated):" But I forgot it."