Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) narrates: The Prophet (peace and blessings be upon him) asked him: "Which verse in the Book of Allah is the greatest?" He said: "Allah and His Messenger know best." The Prophet (peace and blessings be upon him) repeated the question several times, then Sayyiduna Ubayy bin Ka'b (may Allah be pleased with him) said: "Ayat al-Kursi." The Prophet (peace and blessings be upon him) said: "O Abu al-Mundhir, may this knowledge be a blessing for you! By the One in whose hand is my soul, this verse has a tongue and two lips with which it declares the holiness of the Lord at the foot of the Throne."
(Allamah al-Haythami says:) I say:
This narration is in the "Sahih" in abridged form.
Ahmad recorded it, and its narrators are the narrators of the Sahih.
Hadith Referenceمجمع الزوائد ومنبع الفوائد / كتاب التفسير / 10872
Hadith Gradingمحدثین:إسنادہ صحیح
Hadith Takhrij«اخرجه احمد فى المسند (141/5) ، أخرجه صحيح مسلم برقم: 810، وأخرجه مسند أحمد برقم: 20771، وأخرجه مصنف عبد الرزاق برقم: 6001، وأخرجه المستدرك على الصحيحين برقم: 5378، وأخرجه المعجم الكبير للطبراني برقم: 526»