Soul both matter and form
Mullah Sadra like Avicenna before him defines matter ماده as a substance جوهر that bears potentiality قوه, or as a pure-potentiality قوه محض; but since pure potentiality is the complete absence of actuality فعلیه therefore according to Avicenna even the substantiality of matter is not indicative of any concrete existence وجود عینی, since any kind of concrete existence implies the presence of actuality; therefore the substantiality of matter is instead indicative of the fact that prime matter هیولا اولا or pure potentiality doesn't inhere within a subject موضوع; the concrete existence of matter and its actuality is due to form صورته, which is a substance that perfects or actualizes matter; this form is effused upon matter by an incorporeal separate intellect عقل مفارق known as the Active-Intellect عقل فعال which is the last of the vertical immaterial intellects عقول مجرده; therefore that due to which matter possesses subsistence قوام in reality حقیقه is called form; therefore the ma...