Volume 6, Book 60, Number 226:
Narrated Abu Said Al-Mualla:
While I was praying, the Prophet passed by and called me, but I did not go to him till I had fin –
ished my prayer. When I went to him, he said, “What prevented you from coming?” I said, “I was
praying.” He said, “Didn’t Allah say” “O you who believes Give your response to Allah (by obeying
Him) and to His Apostle.” (8.24) Then he added, “Shall I tell you the most superior Sura in the Qur’an
before I go out of the mosque?” When the Prophet intended to go out (of the Mosque), I reminded
him and he said, “That is: “Alhamdu-lillahi Rabbil-‘Alamin (Surat-al-fatiha)’ which is the seven oft
repeated verses (Al-Mathani) and the Grand Quran which has been given to me.”