21. O mankind! Worship your Lord (Allah), Who created you and those who were before you so that you may become Al-Muttaqun (the pious - see V.2:2).
22. Who has made the earth a resting place for you, and the sky as a canopy, and sent down water (rain) from the sky and brought forth therewith fruits as a provision for you. Then do not set up rivals unto Allah (in worship) while you know (that He Alone has the right to be worshipped).
23. And if you (Arab pagans, Jews, and Christians) are in doubt concerning that which We have sent down (i.e. the Qur’an) to Our slave (Muhammad Peace be upon him ), then produce a Surah (chapter) of the like thereof and call your witnesses (supporters and helpers) besides Allah, if you are truthful.
24. But if you do it not, and you can never do it, then fear the Fire (Hell) whose fuel is men and stones, prepared for the disbelievers.