atha vādhyātmikāḥ sarve nairātmyākrāntamūrtayaḥ vastusattvādihetubhyo yathā bāhyā ghaṭādayaḥ
Or, all internal [phenomena] must have forms pervaded by selflessness, because of reasons such as being things and being existent, just like external [objects] such as pots.