It is narrated from Abu Sa'id (may Allah have mercy on him), the freed slave (mawla) of Amir bin Kurayz, that the Messenger of Allah (peace and blessings be upon him) called Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) while he was praying in the mosque. He turned towards him (peace and blessings be upon him), and when he had finished the prayer he came to him (peace and blessings be upon him). He (peace and blessings be upon him) took his hand in his blessed hand and said: "I strongly hope that you will not leave the mosque until you know a surah the like of which, in greatness, Allah Almighty has not sent down in the Torah nor in the Injil." Sayyiduna Ubayy (may Allah be pleased with him) said: I deliberately began to walk slowly (as I was leaving), hoping that he (peace and blessings be upon him) would mention it. So I said: O Messenger of Allah! The surah you promised me? He (peace and blessings be upon him) asked: "What do you recite when you begin the prayer?" I said: All praise is for Allah, the Lord of the worlds [Surah al-Fatihah: 2], until I had completed the surah. Then the Prophet (peace and blessings be upon him) said: "This is the Seven Oft-Repeated (al-Sab' al-Mathani, the seven verses repeated again and again) and the Mighty Qur'an that I have been given."
This narration is mursal and its chain is sahih (authentic), but there is a disagreement about it concerning the narrator al-Ala'. Al-Darawardi narrated it from al-Ala', from his father, from Sayyiduna Abu Hurayrah (may Allah be pleased with him), that the Messenger of Allah (peace and blessings be upon him) came out to Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him).
Al-Tirmidhi recorded it.
And Abd al-Hamid bin Ja'far narrated it from al-Ala', from his father, from Sayyiduna Abu Hurayrah (may Allah be pleased with him), from Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him), and he mentioned the above incident.
Ibn Hibban and al-Hakim recorded it.
Hadith Referenceالمطالب العالية بزوائد المسانيد الثمانية / كتاب التفسير / 3518
Hadith Gradingمحدثین:إسناده صحيح، مرسل
Hadith Takhrij«حکم الحدیث المطالب العالیہ محققاً تنسیق د. سعد بن ناصر بن عبد العزيز الشَّثري- مکتبہ شاملہ :قال ابن حجر: هَذَا مُرْسَلٌ صَحِيحُ الْإِسْنَادِ » «أخرجه سنن الترمذي برقم: 2875، 3125، وأخرجه مسند أحمد برقم: 20591، وأخرجه موطأ مالك برقم: 187، وأخرجه فتح الباري برقم: 4204، وأخرجه المستدرك على الصحيحين برقم: 2095، 3402، وأخرجه صحيح ابن خزيمة برقم: 500، 501، وأخرجه السنن الكبرى للنسائي برقم: 11457، وأخرجه الأوسط في السنن والإجماع والاختلاف برقم: 1295، وأخرجه إتحاف الخيرة المهرة بزوائد المسانيد العشرة برقم: 5606/1، وأخرجه السنن الصغير للبيهقي برقم: 953»