釋禪波羅蜜次第法門 8.63

8.63

意識界者，初生五識為根，對外法塵即生意識，名意識界。若聞五根，亦知對內五臟：憂根對肝，苦根對心，喜根對肺，樂根對腎，捨根對脾。五根因緣則具有三界。所以者何？憂根對欲界，苦根對初禪，喜根對二禪，樂根對三禪，捨根對四禪，乃至四空定皆名捨俱禪。當知三界亦為五臟，其義相關。

As for the mental consciousness element: the five consciousnesses that newly arise act as the faculty, and in facing the external mental objects, mental consciousness arises, which is called the mental consciousness element. If one hears of the five faculties, one also knows that they correspond to the five internal viscera: the faculty of sadness corresponds to the liver, the faculty of suffering corresponds to the heart, the faculty of joy corresponds to the lungs, the faculty of pleasure corresponds to the kidneys, and the faculty of equanimity corresponds to the spleen. Through the causal conditions of the five faculties, the three realms are fully present. Why is this? The faculty of sadness corresponds to the desire realm; the faculty of suffering corresponds to the first dhyāna; the faculty of joy corresponds to the second dhyāna; the faculty of pleasure corresponds to the third dhyāna; and the faculty of equanimity corresponds to the fourth dhyāna, and even the four formless absorptions are all called dhyānas accompanied by equanimity. One should know that the three realms also correspond in meaning to the five viscera.