Ar-Rum 30:30

<h2>The Command to adhere to Tawhid</h2><p>Allah says: `so set your face and persevere in the religion which Allah has prescribed for you, the worship of Allah Alone, the religion of Ibrahim, to which Allah has guided you and which He has perfected for you with the utmost perfection. In this manner, you will also adhere to the sound Fitrah with which He created His creation.' Allah created His creation to recognize Him and know His Tawhid, and that there is no God except Him, as we have already seen when discussing the Ayah,</p><p>وَأَشْهَدَهُمْ عَلَى أَنفُسِهِمْ أَلَسْتَ بِرَبِّكُمْ قَالُواْ بَلَى</p><p>(and made them testify as to themselves (saying): "Am I not your Lord" They said: "Yes!...") (7:172). And according to a Hadith, Allah said,</p><p>«إِنِّي خَلَقْتُ عِبَادِي حُنَفَاءَ، فَاجْتَالَتْهُمُ الشَّيَاطِينُ عَنْ دِينِهِم»</p><p>("I created my servants Hunafa (i.e., monotheists), then the Shayatin misled them from their religion.") We will see in the Hadiths that Allah created His creation with the Fitrah of Islam, then among some of them there emerged corrupt religions such as Judaism, Christianity and Zoroastrianism.</p><p>لاَ تَبْدِيلَ لِخَلْقِ اللَّهِ</p><p>(No change let there be in Allah's Khalq,) Some of them said that this means, `do not change the creation of Allah, for if …

So set thy purpose (O Muhammad) for religion as a man by nature upright - the nature (framed) of Allah, in which He hath created man. There is no altering (the laws of) Allah's creation. That is the right religion, but most men know not -

So set thou thy face steadily and truly to the Faith: (establish) Allah's handiwork according to the pattern on which He has made mankind: no change (let there be) in the work (wrought) by Allah: that is the standard Religion: but most among mankind understand not.

So set you (O Muhammad SAW) your face towards the religion of pure Islamic Monotheism Hanifa (worship none but Allah Alone) Allah's Fitrah (i.e. Allah's Islamic Monotheism), with which He has created mankind. No change let there be in Khalq-illah (i.e. the Religion of Allah Islamic Monotheism), that is the straight religion, but most of men know not. [Tafsir At-Tabari, Vol 21, Page 41]

So devote yourself to the religion of monotheism—the natural instinct God has instilled in mankind. There is no altering God’s creation. This is the true religion, but most people do not know.