Surah Az-Zumar, Ayah 66

Allah is the Creator and Controller, and associating others in worship with Him cancels out Good ...

Allah tells us that He is the Creator, Lord, Sovereign and Controller of all things; everything is subject to His dominion, power and guardianship.

لَّهُ مَقَالِيدُ السَّمَـوَتِ وَالاٌّرْضِ

(To Him belong the Maqalid of the heavens and the earth.) Mujahid said, "Maqalid means `keys' in Persian." This was also the view of Qatadah, Ibn Zayd and Sufyan bin `Uyaynah. As-Suddi said:

لَّهُ مَقَالِيدُ السَّمَـوَتِ وَالاٌّرْضِ

(To Him belong the Maqalid of the heavens and the earth.) "The treasures of the heavens and the earth." Both opinions mean that the control of all things is in the Hand of Allah, may He be blessed and exalted, for His is the dominion and to Him is the praise, and He is able to do all things. He says:

Commentary

The word: مَقَالِيدُ (maqalid) in: لَّهُ مَقَالِيدُ السَّمَاوَاتِ وَالْأَرْ‌ضِ (To Him belong the keys to the heavens and the earth.- 39:63) is the plural form of: مِقلاد (miqlad) or: مِقلِید (miqlid) meaning a key. It has been said that this word has really been Arabicized from the Persian language. In Persian, a key is called کَلِید (kalid). When Arabicized, it became: اِقلِید (iqlid) with its plural being: مَقَالِيدُ (maqalid) (Ruh-ul-Ma’ ani). Having keys in one's hand denotes ownership, possession and the ability to dispense at will. Therefore, the sense of the verse is that the keys to whatever treasures lie hidden in the heavens and the earth are in the hands of Allah and He alone is the custodian and the dispenser in that it is He who gives whenever He wills to whomever He wills and as much as He wills - and would just not give to anyone He so wills.

The existence of the Universe is proof of the existence of its Creator. Similarly, the conduct of the affairs of the universe in a meaningful and systematic manner proves that, at all times, a Supreme Caretaker is watching over it. If one gives serious consideration to these things, one will find in the universe the sign of its Creator and also the sign of its Organizer and Designer. Under these circumstances, those who worship beings other than God are indulging in an action which has absolutely no value in the present universe, because as the Creator and Organizer is one and the same, worshipping Him alone will be of avail to man. Worshipping anybody other than that Being amounts to calling upon a totally non-existent entity.