Vāyu said:: By means of an imaginative grasp and by means of inference the following is mentioned after duly pondering over it. When the ultimate cause, the eternal (Pradhāna) of the nature of Sat and Asat (Existent and nonexistent) stands by, there is an activity in it though it cannot be pointed out, but that is due to (some inner) automatic cause. The seven Prakṛtis enter one another in this process of re-absorption each having it two times.