Surah Al-An'am 6:66

وَكَذَّبَ بِهِۦ قَوْمُكَ وَهُوَ ٱلْحَقُّ ۚ قُل لَّسْتُ عَلَيْكُم بِوَكِيلٍ

But your people have denied it while it is the truth. Say, "I am not over you a manager [i.e., authority]."

Translation: Saheeh International

Tafsir

Your people have denied it the Qur’ān. Yet it is the truth. Say to them ‘I am not a guardian over you to requite you. I am only a warner and your affair is left to God — this was revealed before the command to fight the idolaters.

Excerpt from Tafsir al-Jalalayn, commentary on 6:66, via Quran.com. The reader has the full commentary and 9 more tafsirs.