(Nay, but they) the Quraysh (have denied the Truth) Muhammad (pbuh) and the Qur'an (when it came unto them) this is the second clause of the oath, i.e. by the noble and glorious Qur'an, Muhammad (pbuh) has brought them the Qur'an, (therefore they are now in troubled case) they are in error; it is also said that this means: they are confused; and it is also said this means: they are in disagreement, some of them believe while others do not.
