Chapter 65: Prophetic Commentary on the Qur'an (Tafseer of the Prophet (pbuh))
Narrated Abu Sa 'id bin Al-Mu' alla: While I was praying in the Mosque, Allah' s Messenger (ﷺ) called me but I did not respond to him. Later I
said, "O Allah' s Messenger (ﷺ)! I was praying." He said, "Didn' t Allah say'--"Give your response to Allah
(by obeying Him) and to His Apostle when he calls you." ( 8.24)
He then said to me, "I will teach you a Sura which is the greatest Sura in the Qur' an, before you leave
the Mosque." Then he got hold of my hand, and when he intended to leave (the Mosque), I said to
him, "Didn' t you say to me, 'I will teach you a Sura which is the greatest Sura in the Qur' an?' He said,
"Al-Hamdu-Li l-lah Rabbi-l-' alamin (i. e. Praise be to Allah, the Lord of the worlds) which is Al-Sab' a
Al-Mathani (i. e. seven repeatedly recited Verses) and the Grand Qur' an which has been given to me."
Sahih al-Bukhari 4474