Overall meaning : Allah Almighty opens this noble surah with two letters of the Arabic alphabet, namely haa’ and meem, which prove the miraculous nature of the Qur’an. A brief discussion of these disconnected letters is to be found at the beginning of Surat Al-Baqarah.
The revelation of this great book—the Qur’an—is from Allah, the All-Mighty, the All-Wise.
Surely in the creation of the heavens and the earth there are signs of Allah’s perfect supremacy and wonderful creative power for the believers; and in your own creation, and in the creatures He has spread about over the face of the earth there are signs of Allah’s oneness for people who are firmly convinced of the truth and sincerely believe it. And also in the constant alternation of night and day, in the rain which Allah sends down from the sky with which He brings the earth back to life after it has been lifeless, and in the shifting of the winds in terms of direction (such as southerly and northerly) and type (such as hot and cold) there are indeed signs of Allah’s oneness and immense power for people who use their reason.
Such are Allah’s revelations, which We recite to you, Muhammad, through Gabriel (Jibreel), containing nothing but the truth. If the idolaters do not believe in this Qur’an, in what other message, after Allah’s Book and His signs and revelations, will they, then, believe?