Surah At-Taubah (The Repentance), Verse 32

یُرِیْدُوْنَ اَنْ یُّطْفِـُٔوْا نُوْرَ اللّٰهِ بِاَفْوَاهِهِمْ وَیَاْبَی اللّٰهُ اِلَّاۤ اَنْ یُّتِمَّ نُوْرَهٗ وَلَوْ كَرِهَ الْكٰفِرُوْنَ ۟

Yureedoona ai yutfi'oo nooral laahi bi'afwaahihim wa ya'ballaahu illaaa ai yutimma noorahoo wa law karihal kaafiroon

“Fain would they extinguish Allah's light with their mouths, but Allah will not allow but that His light should be perfected, even though the Unbelievers may detest (it).”

Quran 9:32 (Yusuf Ali Translation)