Luqman · 13

وَإِذۡ قَالَ لُقۡمَٰنُ لِٱبۡنِهِۦ وَهُوَ يَعِظُهُۥ يَٰبُنَيَّ لَا تُشۡرِكۡ بِٱللَّهِۖ إِنَّ ٱلشِّرۡكَ لَظُلۡمٌ عَظِيمࣱ‏

Behold, Luqman said to his son by way of instruction: "O my son! join not in worship (others) with Allah: for false worship is indeed the highest wrong-doing