法界次第初門 3.49

3.49

九、畢竟空。畢竟空者，以前八空破諸法畢竟盡淨，名為畢竟。若無諸法，亦無畢竟之可著，故名畢竟空。又解畢竟名為終竟，觀是終竟之法亦不可得，則不執有究竟之法，名為畢竟空。故《法華經》云：「乃至究竟涅槃，常寂滅相，終歸於空。」

Ninth: absolute emptiness. Absolute emptiness: using the previous eight emptinesses to dismantle all dharmas to their absolute exhaustiveness and purity is named 'absolute.' If there are no dharmas, there is also no absolute to be attached to, hence it is called absolute emptiness. Another explanation is: 'absolute' is named 'final'; contemplating that this final dharma is also unapprehendable, one does not grasp at having an ultimate dharma; this is called absolute emptiness. Thus the Lotus Sūtra says: 'Down to ultimate nirvāṇa, constantly possessing the characteristic of quiescence, it ultimately returns to emptiness.'