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Surah 16. An-Nahl
Ayah 114 - 117
114فَكُلُوا۟ مِمَّا رَزَقَكُمُ ٱللَّهُ حَلَـٰلًا طَيِّبًا وَٱشْكُرُوا۟ نِعْمَتَ ٱللَّهِ إِن كُنتُمْ إِيَّاهُ تَعْبُدُونَ
115إِنَّمَا حَرَّمَ عَلَيْكُمُ ٱلْمَيْتَةَ وَٱلدَّمَ وَلَحْمَ ٱلْخِنزِيرِ وَمَآ أُهِلَّ لِغَيْرِ ٱللَّهِ بِهِۦ ۖ فَمَنِ ٱضْطُرَّ غَيْرَ بَاغٍ وَلَا عَادٍ فَإِنَّ ٱللَّهَ غَفُورٌ رَّحِيمٌ
116وَلَا تَقُولُوا۟ لِمَا تَصِفُ أَلْسِنَتُكُمُ ٱلْكَذِبَ هَـٰذَا حَلَـٰلٌ وَهَـٰذَا حَرَامٌ لِّتَفْتَرُوا۟ عَلَى ٱللَّهِ ٱلْكَذِبَ ۚ إِنَّ ٱلَّذِينَ يَفْتَرُونَ عَلَى ٱللَّهِ ٱلْكَذِبَ لَا يُفْلِحُونَ
117مَتَـٰعٌ قَلِيلٌ وَلَهُمْ عَذَابٌ أَلِيمٌ
[114-117] So, O people, eat of the lawful and pure provisions with which Allah has blessed you and show gratitude113 to Allah for His favors, if you are sincerely obedient to Him.114 Allah has forbidden only these things: do not eat what dies of itself nor blood nor swine flesh nor what has been slaughtered in any name other than Allah. But if forced by hunger one eats of any of these forbidden things, provided he has no intention of breaking the Divine Law or of transgressing the limits by taking more than what is absolutely indispensable, one may expect mercy, for Allah is very Forgiving and very Compassionate.115 Do not ascribe lies to Allah by decreeing with your tongues, "This is lawful and that is unlawful"116 for those people who ascribe lies to Allah can never come to any good. (They should remember that) the pleasures of this world are transitory and in the end there is a painful torment for them.
113This shows that the above mentioned famine had come to an end at the time of the revelation of this Surah.
114Here the observation of the lawful and the unlawful has been made the test of worship of Allah. Those who claim to be the servants of Allah will eat what is lawful and pure and show gratitude to Him and will scrupulously refrain from what is forbidden and impure.
115Please refer also to II: 173, V: 3 and VI: 145.
116This verse clearly shows that none but Allah has the right to declare a thing to be lawful or unlawful. Or, in other words, the right of making laws exclusively rests with Allah. Therefore, any person, who will dare to decide about the lawful and the unlawful, will transgress his powers. Of course, a person, who acknowledges the Divine law as the final authority, may deduce from it whether a certain thing or action is lawful or unlawful.
The arrogation of the right of determining the lawful and the unlawful has been declared to be a falsehood on Allah for two reasons: (1) Such a person, so to say, claims that what he declares to be lawful or unlawful disregarding the authority of the Divine Book, has been made lawful or unlawful by God or (2) he means to claim that Allah has given up the authority of making lawful and unlawful and has thus left man free to make his own laws for the conduct of life. It is obvious that each of these claims will be a "falsehood" and a false imputation to Allah.