俱舍論頌疏論本 27.66

27.66

邊際六者，此邊際定體有六種，謂四無礙、無諍、願智，此六除詞，更加延促壽等邊際，故體成六，謂無諍邊際乃至延促等邊際也。詞無礙解雖依第四邊際定發，體是欲界初靜慮攝，故詞無礙解非邊際體。後定者，第四定也，此明邊際唯依第四禪故。

'The summits are six': the natures of this concentration of the summit are of six kinds: namely, the four unimpeded knowledges, non-conflict, and knowledge resulting from resolve. When [unimpeded knowledge regarding] expressions is excluded from these six, and the summit of prolonging or shortening lifespan and so forth is added, the entities become six: namely, the summit of non-conflict up to the summit of prolonging and shortening, and so forth. Although unimpeded knowledge regarding expressions is generated relying on the fourth concentration of the summit, its nature is subsumed under the desire realm and the first dhyāna; therefore, unimpeded knowledge regarding expressions is not an entity of the summit. 'The final concentration': the fourth concentration; this explains that the summit relies solely on the fourth dhyāna.