Narrated Abu Hurairah:

that the Messenger of Allah ﷺ came out to Ubayy bin Ka'b, and the Messenger of Allah ﷺ said: "O Ubayy!" And he was performing Salat, so Ubayy turned around but he did not respond to him, so Ubayy finished his Salat quickly. Then he turned to the Messenger of Allah ﷺ and said: 'As-Salamu 'Alaikum, O Messenger of Allah!' The Messenger of Allah ﷺ said: 'Wa 'Alaikum As-Salam - what prevented you from responding to me when I called you Ubayy?' He said: 'O Messenger of Allah! I was performing Salat.' So he said: 'Do you not find among what Allah revealed to me: Respond to Allah and to the Messenger when they call you to what gives you life?' He said: 'Of course, I shall not repeat that, if Allah wills.' He said: 'Would you like for me to teach you a Surah the likes of which has neither been revealed in the Tawrah, nor the Injil, nor the Zabur, nor in the entire Qur'an?' He said: "Yes, O Messenger of Allah!' The Messenger of Allah ﷺ said: 'What do you recite in your Salat?' He said: 'I recite Umm Al-Qur'an.' So the Messenger of Allah ﷺ said: 'By the One in Whose Hand is my soul! The like of it has neither been revealed in the Tawrah, nor the Injil nor the Zabur, nor in the Furqan. It is the seven oft-repeated, and the Magnificent Qur'an which I was given.'"

حَدَّثَنَا قُتَيْبَةُ، حَدَّثَنَا عَبْدُ الْعَزِيزِ بْنُ مُحَمَّدٍ، عَنِ الْعَلاَءِ بْنِ عَبْدِ الرَّحْمَنِ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ رَسُولَ اللَّهِ ﷺ خَرَجَ عَلَى أُبَىِّ بْنِ كَعْبٍ فَقَالَ رَسُولُ اللَّهِ ﷺ " يَا أُبَىُّ " . وَهُوَ يُصَلِّي فَالْتَفَتَ أُبَىٌّ وَلَمْ يُجِبْهُ وَصَلَّى أُبَىٌّ فَخَفَّفَ ثُمَّ انْصَرَفَ إِلَى رَسُولِ اللَّهِ ﷺ فَقَالَ السَّلاَمُ عَلَيْكَ يَا رَسُولَ اللَّهِ . فَقَالَ رَسُولُ اللَّهِ ﷺ " وَعَلَيْكَ السَّلاَمُ مَا مَنَعَكَ يَا أُبَىُّ أَنْ تُجِيبَنِي إِذْ دَعَوْتُكَ " . فَقَالَ يَا رَسُولَ اللَّهِ إِنِّي كُنْتُ فِي الصَّلاَةِ . قَالَ " أَفَلَمْ تَجِدْ فِيمَا أَوْحَى اللَّهُ إِلَىَّ أَنِ (استَجِيبُوا لِلَّهِ وَلِلرَّسُولِ إِذَا دَعَاكُمْ لِمَا يُحْيِيكُمْ ) " . قَالَ بَلَى وَلاَ أَعُودُ إِنْ شَاءَ اللَّهُ . قَالَ " تُحِبُّ أَنْ أُعَلِّمَكَ سُورَةً لَمْ يَنْزِلْ فِي التَّوْرَاةِ وَلاَ فِي الإِنْجِيلِ وَلاَ فِي الزَّبُورِ وَلاَ فِي الْفُرْقَانِ مِثْلُهَا " . قَالَ نَعَمْ يَا رَسُولَ اللَّهِ . قَالَ رَسُولُ اللَّهِ ﷺ " كَيْفَ تَقْرَأُ فِي الصَّلاَةِ " . قَالَ فَقَرَأَ أُمَّ الْقُرْآنِ فَقَالَ رَسُولُ اللَّهِ ﷺ " وَالَّذِي نَفْسِي بِيَدِهِ مَا أُنْزِلَتْ فِي التَّوْرَاةِ وَلاَ فِي الإِنْجِيلِ وَلاَ فِي الزَّبُورِ وَلاَ فِي الْفُرْقَانِ مِثْلُهَا وَإِنَّهَا سَبْعٌ مِنَ الْمَثَانِي وَالْقُرْآنُ الْعَظِيمُ الَّذِي أُعْطِيتُهُ " .

قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ . وَفِي الْبَابِ عَنْ أَنَسِ بْنِ مَالِكٍ وَفِيهِ عَنْ أَبِي سَعِيدِ بْنِ الْمُعَلَّى .