摩訶止觀 3.41

3.41

若二乘以九想、十想、八背捨、九次第定，多是事禪，一往止相；有作四諦慧是觀相。此之止觀雖出生死，而是拙度，滅色入空。此空亦得名「止」，亦得名「非止非不止」，而不得名「觀」。何以故？灰身滅智，故不名觀。但是析法，無漏為相，非今所論也。

If for the two vehicles, using the nine notions, the ten notions, the eight liberations, and the nine successive absorptions—these are mostly phenomenal dhyāna, which in a preliminary sense are the characteristics of calming; the wisdom of the four truths with production is the characteristic of contemplation. Although this calming and contemplation transcends birth and death, it is a clumsy salvation, extinguishing form to enter emptiness. This emptiness may also be called 'calming', and may also be called 'neither calming nor non-calming', but it cannot be called 'contemplation'. Why? Because the body is reduced to ashes and wisdom is extinguished, it is not called contemplation. It is merely the analysis of dharmas taking the undefiled as its characteristic, which is not what is discussed now.