। ॥ ३० ॥
In plain words
You are the cause, and you are the effect. Kriyā, every act, is you; Jñāna, every knowing, is you. Apart from you, Mother, there is nothing at all — everything that is rests in you.
Close to the Sanskrit
You alone are the cause and the effect; Kriyā, action, and Jñāna, knowledge — you alone are those too. Without you, Mother, there is nothing; in you everything is established.