The creation of life for Zayd on Saturday morning

So let us return to what is contrary to fact. We say that when God (exalted be He!) foreknows that Zayd will be killed Saturday morning, for example, then we [ask], "Would the creation of life for Zayd on Saturday morning be possible or not possible?" The truth is that it is possible and impossible, that is, it is possible by considering it itself if nothing else is taken into account. [The creation of life for Zayd on Saturday morning] is impossible, however, owing to another, not in itself, namely if in addition to [Zayd considered in himself] one takes into account [his being killed] itself and the knowledge itself, since [God's knowledge] would have been turnet into ignorance [if the creation of life for Zayd were to occur on Saturday morning], but it is impossible that [God's knowledge] is turned into ignorance. So it has to become evident that it is possible in itself, but impossible owing to a necessary impossibility in relation do another.

al-Ghazâlî (1058-1111), Sobre o poder
in McGinnis, Reisman (ed.), Classical Arabic Philosophy: An Anthology of Sources