وَحَدَّثَنَا مُحَمَّدُ بْنُ الْمُثَنَّى، حَدَّثَنَا مُحَمَّدُ بْنُ جَعْفَرٍ، حَدَّثَنَا شُعْبَةُ، قَالَ سَمِعْتُ عَبْدَةَ، بْنَ أَبِي لُبَابَةَ يُحَدِّثُ عَنْ زِرِّ بْنِ حُبَيْشٍ، عَنْ أُبَىِّ بْنِ كَعْبٍ، - رضى الله عنه - قَالَ قَالَ أُبَىٌّ فِي لَيْلَةِ الْقَدْرِ وَاللَّهِ إِنِّي لأَعْلَمُهَا - قَالَ شُعْبَةُ وَأَكْبَرُ عِلْمِي - هِيَ اللَّيْلَةُ الَّتِي أَمَرَنَا رَسُولُ اللَّهِ صلى الله عليه وسلم بِقِيَامِهَا هِيَ لَيْلَةُ سَبْعٍ وَعِشْرِينَ ‏.‏ وَإِنَّمَا شَكَّ شُعْبَةُ فِي هَذَا الْحَرْفِ هِيَ اللَّيْلَةُ الَّتِي أَمَرَنَا بِهَا رَسُولُ اللَّهِ صلى الله عليه وسلم ‏.‏ قَالَ وَحَدَّثَنِي بِهَا صَاحِبٌ لِي عَنْهُ ‏.‏

Zirr b. Hubaish reported that Ubayy b. Ka'b (Allah be pleased with him) said about Lailat-ul-Qadr: By Allah, I know well about it. Shu'ba said: To the best of my knowledge it was the twenty-seventh night for which the Messenger of Allah (PBUH) commanded us to stand for prayer. Shu'ba doubted these words: That it was the night for which the Messenger of Allah (PBUH) commanded us to stand for prayer. And (he further) said: This was narrated to me by a friend of mine from him (the Holy Prophet). Translation Not Available

Book Ref: Sahih Muslim Book 13 Hadith 2634
Web Ref:  Sahih Muslim Book 6 Hadith 762 e