俱舍論頌疏論本 24.60

24.60

釋曰：近分離下染者，近分有八：四靜慮邊、四無色邊。邊謂近分，近根本故。初禪近分離欲界染，如是乃至有頂近分離無所有染，名離下染。

Explanation: Regarding "For a threshold abandoning lower defilements," there are eight thresholds: the peripheries of the four dhyānas and the peripheries of the four formless [attainments]. 'Periphery' means the threshold, because it borders on the fundamental. The threshold of the first dhyāna abandons the defilements of the desire realm; in this way, up to the threshold of the peak of existence abandons the defilements of [the sphere of] nothingness; this is called abandoning lower defilements.