Amatul Rahmân Omer:
(The fact is that) these are mere names (bearing no significance) which you have coined, you and your forefathers, for which Allâh has revealed no authority (for their being worshipped as gods and goddesses). These (idol-worshippers) follow nothing but mere conjectures and the fancies of (their own) minds. (They do this) even though true guidance has already come to them from their Lord.
