Say: 'I find nothing in what has been revealed to me that forbids any one to eat of any food except the dead, running blood, and the flesh of swine for these are unclean and that which has been hallowed in its slaughter to other than Allah. But whoever is constrained to eat of any of these, not intending to sin or transgress, then your Lord is Forgiving, the Most Merciful. 145 And [only] unto those who followed the Jewish faith did We forbid all beasts that have claws; and We forbade unto them the fat of both oxen and sheep, excepting that which is in their backs or entrails or that which is within the bone: thus did We requite them for their evildoing - for, behold, We are true to Our word!" 146 If they belie you, say: 'Your Lord is the Owner of all Encompassing Mercy, but His Might cannot be withheld from the nation, the evildoers' 147 The idolaters will say, 'Had God willed, we would not have been idolaters, neither our fathers, nor would we have forbidden aught.' Even so the people before them cried lies until they tasted Our might. Say: 'Have you any knowledge, for you to bring forth for us? You follow only surmise, merely conjecturing.' 148 Say: "To God belongs the consummate argument. Had He willed He would surely have guided all of you aright." 149 Say to them: 'Call your witnesses to testify that Allah forbade such-and-such.' Then if they do testify, neither testify with them nor follow the desires of those who have given the lie to Our signs and who do not believe in the Hereafter and set up equals with their Lord. 150