13. My father said: Sa`d ibn `Abd Allah said, on the authority of Ya`qub ibn Yazid, on the authority of Muhammad ibn Abu `Umayr, on the authority of some of our scholars who he transmitted from, that Abu `Abd Allah al-Sadiq said: “A servant (of Allah) is not able to accomplish an action unless he has the ability to do so. Sometimes he has the ability to accomplish an action, but he does not do it. However, he can never accomplish an action unless he has the ability to do so.”