When it is said to them: "Follow what God has revealed," they reply: "No, we shall follow only what our fathers had practiced," -- even though their fathers had no wisdom or guidance!
The semblance of the infidels is that of a man who shouts to one that cannot hear more than a call and a cry. They are deaf, dumb and blind, and they fail to understand.
O believers, eat what is good of the food We have given you, and be grateful to God, if indeed you are obedient to Him.
Forbidden to you are carrion and blood, and the flesh of the swine, and that which has been consecrated (or killed) in the name of any other than God. If one is obliged by necessity to eat it without intending to transgress, or reverting to it, he is not guilty of sin; for God is forgiving and kind.
Those who conceal any part of the Scriptures that God has revealed, and thus make a little profit thereby, take nothing but fire as food; and God will not turn to them on the Day of Resurrection, nor nourish them for growth; and their doom will be painful.
They are those who bartered away good guidance for error, and pardon for punishment: How great is their striving for the Fire
That is because God has revealed the Book containing the truth; but those who are at variance about it have gone astray in their contrariness.