大般涅槃經義記 5.147

5.147

有量、無量，就法分別，解有三義：一寬狹分別，小乘所觀苦、集二諦止在分段因之與果，滅、道二諦唯是分段因果對治，觀法局限，故名有量；大乘所觀苦、集，該於分段、變易二種因果，滅、道統收分段、變易兩種對治，觀法寬廣故名無量。

Having measure and measureless are distinguished in terms of dharmas, for which the explanation has three meanings: First, distinguishing by breadth and narrowness. The two truths of suffering and origination contemplated by the Hīnayāna are restricted to the causes and fruits of fragmentary [saṃsāra], and the two truths of cessation and the path are only the antidotes to the causes and fruits of fragmentary [saṃsāra]; the dharmas contemplated are confined, hence called having measure. The suffering and origination contemplated by the Mahāyāna encompass both kinds of cause and fruit—fragmentary and transformed; cessation and the path collectively take in both kinds of antidote—fragmentary and transformed; the dharmas contemplated are broad and vast, hence called measureless.