REVEALED comparatively early - probably towards the end of the fourth or the beginning of the fifth year of the Prophet's mission - this surah is devoted almost entirely to the problem of divine guidance and its rejection by those who are "lost in false pride, and (hence] deeply in the wrong" (verse 2). The only "title" or, rather, key-word - applied to this surah since the earliest times is the letter s (Sad) which introduces: the first verse.
Sad.1 CONSIDER2 this Qur'an, endowed with all that one ought to remember!3