(Arabic: "acquisition"), a doctrine in Islam adopted by the theologian al-Ash'ari (d. 935) as a mean between predestination and free will. According to al-Ash'ari, all actions, good and evil, are originated by God, but they are "acquired" (maksub, whence kasb) by men. As for the criticism that his kasb theory attributes evil to God, al-Ash'ari explained that, by creating evil, God is not an evildoer.
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