In the Book of the Friday prayer, Al-Bukhari recorded that Abu Hurayrah said, "The Prophet used to recite in Fajr on Fridays:
(Alif Lam Mim. The revelation of...), As-Sajdah, and
(Has there not been over man...)Al-Insan (76)." This was also recorded by Muslim. Imam Ahmad recorded that Jabir said, "The Prophet would never sleep until he recited:
(Alif Lam Mim. The revelation of...), As-Sajdah, and
(Blessed be He in Whose Hand is the dominion) Al-Mulk (67)."
In the Name of Allah, the Most Gracious, the Most Merciful.
We discussed the individual letters at the beginning of Surat Al-Baqarah, and there is no need to repeat it here.
(The revelation of the Book in which there is no doubt,) means, there is no doubt whatsoever that it has been revealed
(from the Lord of all that exists.) Then Allah tells us about the idolators:
(Or say they: "He has fabricated it"): they say, he has fabricated it, i.e., he has made it up by himself.
(Nay, it is the truth from your Lord, so that you may warn a people to whom no warner has come before you, in order that they may be guided.) means, in order that they may follow the truth.