Say: Produce, then, [another] revelation from God which would offer better guidance than either of these two [and] I shall follow it, if you speak the truth!"

Say: "Then bring ye a Book from God, which is a better guide than either of them, that I may follow it! (do), if ye are truthful!"

Say (unto them, O Muhammad): Then bring a scripture from the presence of Allah that giveth clearer guidance than these two (that) I may follow it, if ye are truthful.

Say: Then bring some (other) Book from Allah which is a better guide than these two, I will follow it -- if you are truthful.

Say, "Then bring a scripture from Allah which is more guiding than either of them that I may follow it, if you should be truthful."