31:15
وَإِن جَٰهَدَاكَ عَلَىٰٓ أَن تُشْرِكَ بِى مَا لَيْسَ لَكَ بِهِۦ عِلْمٌۭ فَلَا تُطِعْهُمَا ۖ وَصَاحِبْهُمَا فِى ٱلدُّنْيَا مَعْرُوفًۭا ۖ وَٱتَّبِعْ سَبِيلَ مَنْ أَنَابَ إِلَىَّ ۚ ثُمَّ إِلَىَّ مَرْجِعُكُمْ فَأُنَبِّئُكُم بِمَا كُنتُمْ تَعْمَلُونَ
But if they endeavor to make you associate with Me that of which you have no knowledge, do not obey them but accompany them in [this] world with appropriate kindness and follow the way of those who turn back to Me [in repentance]. Then to Me will be your return, and I will inform you about what you used to do.
Translation · Saheeh International
Tafsir
Ibn Kathīr (abridged)
Luqman's Advice to His Son
Allah tells us how Luqman advised his son. His full name was Luqman bin `Anqa' bin Sadun, and his son's name was Tharan, according to a saying quoted by As-Suhayli. Allah describes him in the best terms, and states that he granted him wisdom. Luqman advised his son, the closest and most beloved of all people to him, who deserved to be given the best of his knowledge. So, Luqman started by advising him to worship Allah Alone, and not to associate anything with Him. Then he warned him:
إِنَّ الشِّرْكَ لَظُلْمٌ عَظِيمٌ
(Verily, joining others in worship with Allah is a great Zulm (wrong) indeed.) meaning, it is the greatest wrong. Al-Bukhari recorded that `Abdullah said: "When the Ayah
الَّذِينَ ءَامَنُواْ وَلَمْ يَلْبِسُواْ إِيمَـنَهُمْ بِظُلْمٍ
(It is those who believe and confuse not their belief with Zulm)(6:82) was revealed, the Companions of the Messenger of Allah ﷺ were distressed by this, and said, `Who among us does not confuse his belief with Zulm' The Messenger of Allah ﷺ said: