俱舍論疏 15.148

15.148

論「有餘師說至樂根異熟」，又敘異說。此師中定，初禪根本地，同一地故，感根本地樂受。

The Śāstra says: "Other masters say [...] the vipāka of the faculty of pleasure." This again presents a divergent view. According to this master, intermediate dhyāna and the fundamental stage of the first dhyāna belong to the same level, and therefore it brings about the pleasant feeling of the fundamental stage.