釋禪波羅蜜次第法門 6.17

6.17

答曰：緣理之慧利，故得發。若神通無量等，是事法，必假深定，而欲界、未到非全不得修無量心，但發得，即屬初禪，是故不說。如初禪五支、覺觀二支分別欲界，則生悲易，喜支生喜易，樂支生慈易，一心支生捨易，故說為修證之處。

Answer: The wisdom conditioned by principle is sharp, so it can arise. Supernormal powers, immeasurables, and the like are phenomenal practices and necessarily rely on deep absorption; yet it is not that the desire realm and anāgamya are completely unable to cultivate the immeasurable minds, but once they arise, they belong to the first dhyāna, and therefore they are not spoken of. Just as in the five factors of the first dhyāna, the two factors of vitarka and vicāra discern the desire realm, making it easy to give rise to compassion; the factor of prīti makes it easy to give rise to sympathetic joy; the factor of sukha makes it easy to give rise to loving-kindness; and the factor of ekāgratā makes it easy to give rise to equanimity; therefore, it is spoken of as a station of cultivation and realization.