釋禪波羅蜜次第法門 6.62

6.62

答曰：禪則以定為貴，樂心恬靜，與定相扶，故為勝。無量則心緣眾生，因緣眾生歡喜為勝，故細。復次，行者初定既淺，但以樂緣眾生。何以故？若取喜相，心散難攝，後緣三昧漸深，雖歡喜踊躍，心不散亂，故為細。

Answer: In dhyāna, absorption is valued; a mind of happiness (sukha) is tranquil and peaceful, which supports absorption, and is therefore superior. In the immeasurables, the mind focuses on sentient beings; taking the delight and joy of sentient beings as its object is superior, and is therefore subtle. Furthermore, since the practitioner's initial absorption is shallow, they only focus on sentient beings with happiness (sukha). Why? If they were to take the sign of joy (prīti), their mind would scatter and be difficult to gather. Later, as the focused samādhi gradually deepens, even though they leap with joy, their mind is not scattered; therefore it is subtle.