In the past We granted to Moses and Aaron the criterion (for judgment), and a Light and a Message for those who would do right,-
walaqad ’aataynaa muusaa wahaaruuna alfurqaana wadiyaa’an wazikran lilmuttaqiina
(And We verily gave Moses and Aaron the Criterion) the deliverer from dubious matters; it is also said that the Criterion means: victory and the upper hand over Pharaoh (and a light) which shows error (and a Reader) and an admonition (for those who keep from evil) for those who ward off idolatry, disbelief and indecencies.