And the proof that possible things are possible in the case of God is that there is general agreement on their possibility. If the doing of any possible thing were incumbent upon God, the possible would be turned into a necessary thing. And if the doing of a possible thing were hindered from Him, the possible would be turned into an impossible. But the turning of the possible into a necessary or an impossible is false. By this, you may know that there is nothing incumbent upon God, against the doctrine of the Mu‘tazilites, who say that it is incumbent upon God to do that which is best (_salah_) for the creature. So, it would be incumbent upon Him that He should sustain the creature, but this is falsehood against Him and a lie from which He is far removed. He creates faith in Zayd, for example, and gives him knowledge out of His free grace, without there being any necessity upon Him. And one of the arguments which may be brought against the Mu‘tazilites is that afflictions come upon little children, such as ailments and diseases. And in this there is not that which is best for them. So, if doing that which is best is incumbent upon Him, why do afflictions descend upon little children? For they say that God could not abandon that which is incumbent upon Him, for abandoning it would be defect, and God is far removed from defect, by Agreement. And God’s rewarding the obedient is a grace from Him, and His punishing the rebellious is justice from Him. For obedience does not advantage Him, nor rebellion injure Him; He is the Advantager and the Injurer. And these acts of obedience or rebellion are only signs of God’s rewarding or punishing those described by them. Then him whom He wills to draw near to Himself, He helps to obedience: and in him whose abandoning and rejection He wills, He creates rebellion. And all acts of good and bad are by the creation of God, for He creates the creature and that which the creature does, as He has said (Qur. 37, 94), “and God hath created you and that which ye do.”