楞伽阿跋多羅寶經註解 4.212

4.212

不壞，頌上喻法身常住。不去，頌如來說法不隨諸去流轉。亦復不究竟者，謂以不壞不去觀察如來，則未為究竟。當觀諸佛猶如恒沙，平等無異，離諸過患。又言隨流性常者，謂隨順究竟涅槃之流，是為真常正覺也。

'Neither destroyed' versifies the preceding analogy of the dharmakāya being eternally abiding. 'Nor going' versifies the Tathāgata's teaching of the Dharma not drifting along with destinations. 'Nor again ultimate' means that observing the Tathāgata as neither destroyed nor going is not yet the ultimate. One should observe all Buddhas like the Ganges sands, impartial and without difference, free from all faults and perils. Furthermore, saying 'flowing with the stream yet their nature is constant' means flowing along with the stream of ultimate nirvāṇa, which is truly constant correct awakening.