楞伽阿跋多羅寶經註解 4.237

4.237

如來常以如河流、如種子、如燈等喻，破彼妄想有為作法，皆是空、無常、剎那。凡愚不善此隱密之說，而起剎那妄想。剎那息煩亂等，正頌上隱覆義，謂能了剎那，可以息煩亂、體寂靜，則自然離所作，故一切法無生，所以為說剎那之義也。

The Tathāgata frequently uses analogies such as a river flowing, a seed, or a lamp to refute their vikalpa of conditioned, constructed dharmas as all being empty, impermanent, and momentary. The foolish and ignorant do not understand this esoteric discourse and give rise to the vikalpa of momentariness. 'When the momentary ceases, agitation is stilled,' and so forth, directly versifies the meaning of the hidden and intentional teaching above, meaning that if one can understand the momentary, one can still agitation and embody tranquility; then naturally one is free from what is made. Hence all dharmas are unarisen; this is why he explains the meaning of momentariness.