Now those who associate partners (with Allâh) say, `If Allâh had (so) willed we would not have associated partners (with Him), nor would have our forefathers, nor would we have made anything unlawful (of our own);' just as (they deny you) their predecessors cried lies (to their apostles of God) until they suffered Our punishment. Say, `Have you any knowledge (about it)? Then present it before us. You follow naught but mere conjectures, and you do nothing but tell lies.'