Al Hajj, 12 Ayah
22:12
يَدۡعُواْ مِن دُونِ ٱللَّهِ مَا لَا يَضُرُّهُۥ وَمَا لَا يَنفَعُهُۥۚ ذَٰلِكَ هُوَ ٱلضَّلَٰلُ ٱلۡبَعِيدُ ١٢
Yad`ū Min Dūni Al-Lahi Mā Lā Yađurruhu Wa Mā Lā Yanfa`uhu ۚ Dhālika Huwa Ađ-Đalālu Al-Ba`īdu
He invokes instead of Allah that which neither harms him nor benefits him. That is what is the extreme error.