肇論新疏 3.121

3.121

初句牒前名家敘有餘無餘之文。信是下，縱是權宜。縱有二意：一權寂是無餘，隨宜方便故云權也。立教是有餘，皆如來化生之本意。二隱顯之實跡，隱為無餘，顯為有餘。

The first sentence takes up the text of the preceding proponent of names recounting 'with remainder' and 'without remainder.' From "truly this is" down concedes that it is expedient. Conceding has two senses: first, expedient quiescence is [nirvāṇa] without remainder; because it accords with what is fitting as an upāya, it is called expedient. Establishing the teachings is [nirvāṇa] with remainder; both are the fundamental intent of the Tathāgata in transforming beings. Second, the genuine traces of concealing and revealing: concealing is [nirvāṇa] without remainder, and revealing is [nirvāṇa] with remainder.