Sayyiduna Abu Hurairah (may Allah be pleased with him) narrates from Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) that he said: The Messenger of Allah (peace and blessings be upon him) said: "Shall I not teach you a great surah, the like of which has not been revealed in the Torah, the Gospel, or the Noble Qur'an?" I said, "O Messenger of Allah (peace and blessings be upon him), do teach me." So he (peace and blessings be upon him) said: "Surely, before you leave through this door, I will tell you that surah." Therefore, I stood with him (peace and blessings be upon him), and he began to converse with me while my hand was in his blessed hand. I started walking slowly, fearing that he (peace and blessings be upon him) might leave without telling me that surah. When I reached near the door, I said, "O Messenger of Allah, the surah which you promised to tell me (please tell me)." He (peace and blessings be upon him) said: "When you stand for prayer, how do you begin your recitation?" He says: I recited Surah Al-Fatihah to him. So he (peace and blessings be upon him) said: "This is the surah, this is the great surah, and this is the Sab‘ al-Mathani about which Allah, the Exalted, has said «‏‏‏‏وَلَقَدْ آتَيْنَاكَ سَبْعًا مِّنَ الْمَثَانِي وَالْقُرْآنَ الْعَظِيمَ» ‏‏‏‏ [ سورة الحجر ] 'Indeed, We have given you the seven oft-repeated (verses) and the Grand Qur'an.' This is what has been given to me."