Say, "Have you seen what Allāh has sent down to you of provision of which you have made [some] lawful and [some] unlawful?" Say, "Has Allāh permitted you [to do so], or do you invent [something] about Allāh?"
None can make Anything Lawful or Unlawful except Allah or Those Whom Allah has allowed to do so
Ibn `Abbas, Mujahid, Ad-Dahhak, Qatadah, `Abdur-Rahman bin Zayd bin Aslam and others said: "This Ayah was revealed to criticize the idolators for what they used to make lawful and unlawful. Like the Bahirah, Sa'ibah and Wasilah." As Allah said:
(And they assign to Allah a share of the tilth and cattle which He has created.)6:136 Imam Ahmad recorded a narration from Malik bin Nadlah who said, "I came to Allah's Messenger while in filthy clothes. He said,
In the third verse (59), warning has been given to people who introduce their personal opinion in the serious matter of Halal (lawful) and Haram (unlawful). They would, at will, declare something to be Halal and dub something to be Haram - without any authority of the Qur'an, and Sunnah. A severe warning of no less a punishment than that of the day of Qiyamah has been given to those who commit this crime (60). This tells us that the fact of something being Halal or Haram does not depend on human opinion. Instead of that, it is the special right and prerogative of Allah Ta` ala and His Messenger. Without their injunctions, it is not permissible to call something either حلال Halal or حرام Haram.
Tazkirul Quran
Maulana Wahiduddin KhanOn ayahs 58–59
Man is a psychological being. If psychologically he is vitiated, his whole life is affected. The guidance revealed by God in the form of the divine Book is an absolute mercy to all humanity. It consists of the best advice and guidance, but it is necessary for a man to be its recipient that he should not have lost his power of right thinking. As for one who has perverted his faculty of right thinking, the principles enshrined in the divine Book will fail to guide him. The things of the present world and its glories and grandeur are ‘cash’ benefits in the eyes of man. Man relishes their taste and savours them at every moment. In comparison to this, the bounties of the Hereafter count as mere ‘promises’. Man only hears about them; he does not experience them. For this reason, many people rush towards and fall all-out on the ‘ready’ benefits of world. But those who think deeply will be happy with the thought that God, by revealing His guidance, has opened for them the doors to attaining eternal bounties.
Uthmani text of the Madinah mushaf (King Fahd Complex). Translation: Saheeh International. Tafsir via Quran.com.