Surah Al-Furqan, Verse 52

فَلَا تُطِعِ ٱلۡكَٰفِرِينَ وَجَٰهِدۡهُم بِهِۦ جِهَادٗا كَبِيرٗا٥٢

falā tuṭiʿi l-kāfirīna wajāhid'hum bihi jihādan kabīran

So do not obey the disbelievers, and strive against them with it [i.e., the Qur’ān] a great striving.