Don 't follow that of which you have no knowledge. Verily the ear, the eye, and the heart, each will be questioned.
(Surah Bani Isra'il, 17: 36)
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Fight against the leaders of the unbelievers if they violate their pledge and revile your faith, to force them to stop their aggression against you.
(Surah at-Tawba, 9:12)