Narrated Abu Hurairah:

that the Messenger of Allah ﷺ said: "Gather and I shall recite to you one third of the Qur'an." He said: "So whoever was to gather did so, then the Messenger of Allah ﷺ came out and recited Qul Huwa Allahu Ahad. Then he went back in. Some of them said to each other: "The Messenger of Allah ﷺ said: 'I shall recite to you one third of the Qur'an I thought that this was news from the Heavens. Allah's Prophet ﷺ came out and said: "Indeed I said that I would recite to you one third of the Qur'an, and it is indeed equal to one third of the Qur'an."

حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، حَدَّثَنَا يَزِيدُ بْنُ كَيْسَانَ، حَدَّثَنَا أَبُو حَازِمٍ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ ﷺ " احْشِدُوا فَإِنِّي سَأَقْرَأُ عَلَيْكُمْ ثُلُثَ الْقُرْآنِ " . قَالَ فَحَشَدَ مَنْ حَشَدَ ثُمَّ خَرَجَ نَبِيُّ اللَّهِ ﷺ فَقَرَأَْ (قُلْ هُوَ اللَّهُ أَحَدٌ ) ثُمَّ دَخَلَ فَقَالَ بَعْضُنَا لِبَعْضٍ قَالَ رَسُولُ اللَّهِ ﷺ " فَإِنِّي سَأَقْرَأُ عَلَيْكُمْ ثُلُثَ الْقُرْآنِ " . إِنِّي لأُرَى هَذَا خَبَرًا جَاءَهُ مِنَ السَّمَاءِ ثُمَّ خَرَجَ نَبِيُّ اللَّهِ ﷺ فَقَالَ " إِنِّي قُلْتُ سَأَقْرَأُ عَلَيْكُمْ ثُلُثَ الْقُرْآنِ أَلاَ وَإِنَّهَا تَعْدِلُ ثُلُثَ الْقُرْآنِ " .

قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ غَرِيبٌ مِنْ هَذَا الْوَجْهِ . وَأَبُو حَازِمٍ الأَشْجَعِيُّ اسْمُهُ سَلْمَانُ .