Surah Al-Hajj, Verse 12

يَدۡعُواْ مِن دُونِ ٱللَّهِ مَا لَا يَضُرُّهُۥ وَمَا لَا يَنفَعُهُۥۚ ذَٰلِكَ هُوَ ٱلضَّلَٰلُ ٱلۡبَعِيدُ١٢

yadʿū min dūni l-lahi mā lā yaḍurruhu wamā lā yanfaʿuhu dhālika huwa l-ḍalālu l-baʿīdu

He invokes instead of Allāh that which neither harms him nor benefits him. That is what is the extreme error.