 a human being is not by his body as the horses body may become food for a human being and sperm is created from it from which a human being is produced. so it cannot be said the horse became a human being rather the horse is a horse in its form not in its substance and the form has disappeared and only the substance remains.
وليس الإنسان ببدنه إذ قد يصير بدن الفرس غذاء الإنسان فيتخلق منه نطفة يحصل منها إنسان فلا يقال الفرس انقلب إنسانا بل الفرس فرس بصورته لا بمادته وقد انعدمت الصورة وما بقي إلا المادة.