By the One in Whose Hand is my soul, it has a tongue and two lips, and it glorifies the Sovereign (i.e., Allah) at the foot of the Throne.” This was also narrated by Muslim, without the phrase “By the One in Whose Hand is my soul…”.
He said, “Allah and His Messenger know best.” He repeated it several times, then he said, “Ayatul Kursi.” The Prophet (peace and blessings of Allah be upon him) said, “Congratulations upon your knowledge O Abu’l-Mundhir. It was reported in a sahih hadith from the Messenger (peace and blessings of Allah be upon him) that it is the greatest ayah in the Book of Allah… It was narrated from Ubayy, i.e., Ubayy ibn Ka’b that the Prophet (peace and blessings of Allah be upon him) asked him which ayah in the Book of Allah was the greatest. “This is Ayatul Kursi, which has a high status. Imam Ibn Kathir (may Allah have mercy on him) said in his Tafsir of Ayatul Kursi from Surat al-Baqarah:
Ayatul Kursi: The Greatest verse in the Quran