大般若波羅蜜多經般若理趣分述讚 1.16

1.16

問：處中有淨穢，不定但說一，諸方時不同，何妨亦定說。凡夫見穢處，知聖居淨土。何不別論此時說，準餘知別時。答：或一剎那或復多劫不可定說，準不解故，由是總相但言一時。其延促劫量，或唯識以促延、或所執以雙泯、或依他以妄法、或實性以平等、或聖力以加持，故有延促。無勞疑惑，義準應釋。

Question: In places there are pure and impure, yet without indeterminacy only one is stated; times differ in different directions, so what is to prevent also stating it definitively? An ordinary person sees an impure place, while knowing that the noble one dwells in a pure land. Why not separately discuss the speaking of this time, so that by analogy to the rest one could know the distinct time?
Answer: It may be a single moment or many kalpas and cannot be definitively stated; since it cannot be understood by analogy, for this reason it simply states 'at one time' in a general aspect. As for the extension and compression of kalpa measures: either through mere-consciousness it is compressed or extended; or through the imagined nature both are eliminated; or through the dependent nature it is a deluded phenomenon; or through the true nature it is sameness; or through noble power it is empowered—hence there is extension and compression. There is no need for doubt; it should be explained by drawing inferences from the principle.