﴿7﴾ وَكَذَلِكَ أَوْحَيْنَا إِلَيْكَ قُرْآناً عَرَبِيّاً لِتُنْذِرَ أُمَّ الْقُرَی وَمَنْ حَوْلَهَا وَتُنْذِرَ يَوْمَ الْجَمْعِ لا رَيْبَ فِيهِ فَرِيقٌ فِي الْجَنَّةِ وَفَرِيقٌ فِي السَّعِيرِ
7. And thus We have revealed unto you [O Muhammad], a Qur'an in Arabic that you may warn the Mother of the Town [Mecca] and all around it and warn [them] of the Day of Assembling [Resurrection] of which there is no doubt, when a party will be in Paradise and a party in the blazing Fire.
It is reported in traditions that Mecca is the Mother of the Town, since it was the first town which was dry following the Deluge. The Day of Assembling is one of the attributes of Resurrection whereon all people shall assemble in one place. The clause “of which there is no doubt” is attested eleven times for Resurrection, four times for the Holy Qur'an, and once for the time of death. In other words, noticing the manifestations of Resurrection in nature – rejuvenation in springtime and withering away in autumn – man is not supposed to entertain doubts as to raising of the dead on the Day of Resurrection. Thus, the blessed Verse in question is saying that in like manner that upon Prophet Muhammad’s (SAW) predecessors were sent Scriptures in the languages of their peoples, the Holy Qur'an is sent down upon him in the Arabic tongue such that Arabs may comprehend its contents. “That you may warn the Mother of the Town [Mecca] and all around it” intends to say that the Noble Prophet (SAW) was supposed to warn the people of Mecca and its vicinity that
what was in store for former nations who denied their Prophets. “And warn [them] of the Day of Assembling” indicates that the Noble Prophet of Islam (SAW) was to inform his people of the Day of Resurrection on which God Almighty shall assemble all the inhabitants of the heavens and the earth as to which there is no doubt. Then, God Almighty divides people on the Day of Resurrection into two groups: “a party will be in Paradise and a party in the blazing Fire,” in other words, a group will go to Paradise owing to their obedience to God Almighty and another group will go to Hell due to their sins and vicious deeds committed in this world.