Surah Al-An'am (The Cattle), Verse 56

قُلْ اِنِّیْ نُهِیْتُ اَنْ اَعْبُدَ الَّذِیْنَ تَدْعُوْنَ مِنْ دُوْنِ اللّٰهِ قُلْ لَّاۤ اَتَّبِعُ اَهْوَآءَكُمْ قَدْ ضَلَلْتُ اِذًا وَّمَاۤ اَنَا مِنَ الْمُهْتَدِیْنَ ۟

Qul innee nuheetu an a'budal lazeena tad'oona min doonil laah; qul laaa attabi'u ahwaaa'akum qad dalaltu izanw wa maaa ana minal muhtadeen

“Say: "I am forbidden to worship those - other than Allah - whom ye call upon." Say: "I will not follow your vain desires: If I did, I would stray from the path, and be not of the company of those who receive guidance."”

Quran 6:56 (Yusuf Ali Translation)