(Hast thou not seen) have you not been informed, O Muhammad, about (those who pretend that they believe in that which is revealed unto thee) i.e. the Qur'an (and that which was revealed before thee) i.e. the Torah, (how they would go for judgement (in their disputes) to false deities) Ka'b Ibn al-Ashraf (when they have been ordered) in the Qur'an (to abjure them?) to disavow them. (Satan would mislead them far astray) from the Truth and guidance. This verse was revealed about a hypocrite by the name of Bishr whom 'Umar Ibn al-Khattab had killed. This hypocrite had a dispute with a Jewish man.