Islam Permits What Is Wholesome
Allah addressed all human beings saying, O mankind! Eat of what is permissible and good on earth, and do not follow the footsteps of Satan; truly he is an open adversary to you. (2:168)
Thus He speaks to all the people on this globe, calling on them to eat of the good things which He has provided for them on this vast, outspread table, the Earth, and not to follow the ways of Satan, who has made it alluring to some people to prohibit for themselves various wholesome things which Allah has made halal, thus leading them toward the pitfalls of self-destruction. Then Allah addressed the Believers in particular saying, O you who believe! Eat of the good things that We have provided for you, and be thankful to Allah if it is He alone whom you worship. Indeed, what He has forbidden to you is the flesh of dead animals and blood and the flesh of swine, and that which has been sacrificed to anyone other than Allah. But if one is compelled by necessity, neither craving (it) nor transgressing, there is no sin on him; indeed, Allah is Forgiving, Merciful. (2:172-173)
In this particular message to the Believers, Allah Subhanahu wa Ta’ala tells them to eat of the good things of His providing and to give thanks to Him for His favors. He then explains that no food is haram to them except the four kinds mentioned in the ayah. The same four kinds, with some further details, are mentioned at other places in the Qur’an: Say: I do not find in what is revealed to me anything prohibited to an eater in his food unless it be (the flesh of) that which is dead, or flowing blood, or the flesh of swine, for that is indeed foul, or the abomination which has been dedicated to anyone other than Allah. But if one is compelled by necessity, neither craving (it) nor transgressing, then, indeed, thy Lord is Forgiving, Merciful. (6:145)
And in even greater detail: Forbidden to you are the flesh of dead animals and blood and the flesh of swine, and that which has been dedicated to any other than Allah, and that which has been killed by strangling or by beating or by falling or by being gored, and that which has been (partly) eaten by a wild beast except that which you make lawful by slaughtering (before its death), and that which has been sacrificed to idols…. (5:4 (5:3))