Surah Hud — Ayah 109 (11:109)
فَلَا تَكُ فِي مِرۡيَةٖ مِّمَّا يَعۡبُدُ هَٰٓؤُلَآءِۚ مَا يَعۡبُدُونَ إِلَّا كَمَا يَعۡبُدُ ءَابَآؤُهُم مِّن قَبۡلُۚ وَإِنَّا لَمُوَفُّوهُمۡ نَصِيبَهُمۡ غَيۡرَ مَنقُوصٖ ١٠٩
English translation (Saheeh International)
So do not be in doubt, [O Muḥammad], as to what these [polytheists] are worshipping. They worship not except as their fathers worshipped before. And indeed, We will give them their share undiminished.
Brief commentary
So do not be, O Messenger, in doubt about the invalidity of what these idolaters worship. They have no proof based on logic or any proof from the sacred law to justify such worship. The only thing that makes them worship other than Allah is their blind following of their forefathers. He will give them their full portion of the punishment without any reduction.