na nirākāreṇa nāpi sākāreṇa nāpi viṣayākārād anyākāreṇa bāhyasya grahaṇaṃ yuktam anyaśca prakāro nāsti
The grasping of an external [object] is not possible - neither without form, nor with form, nor with a form different from the object's form - and there is no other way.