大般涅槃經義記 5.128

5.128

第四結觀虛實之中，因結集觀乘辯餘三，今先辯其諦義淺深，後約人論。苦有三重：一苦、二諦、三者是實。逼惱是苦；因緣有無法相不謬，目之為諦；窮其本體是如來藏性，如來藏性由來不起，今亦無滅，自性常寂，苦體實然，故名為實。餘亦如是，今約此義彰觀差別，為明菩薩兼舉凡夫二乘顯之。

In the fourth part, concluding the contemplation of the false and the real, following the conclusion of the contemplation of origin, he takes the opportunity to distinguish the other three. Now he first distinguishes the shallowness and depth of the meaning of the truths, and later discusses them in terms of persons. Suffering has three tiers: first, suffering; second, truth; third, reality. Oppressive affliction is suffering; the presence or absence of dharmic marks through causes and conditions being unfailing is designated as truth; exhausting its fundamental essence, it is the nature of the tathāgatagarbha, and because the nature of the tathāgatagarbha originally does not arise and now also does not cease, but is eternally tranquil in its self-nature, the essence of suffering is truly like this, and therefore it is called reality. The others are also like this. Now, based on this meaning, he reveals the distinctions in contemplation, and in order to clarify the bodhisattva, he also raises ordinary people and the two vehicles to make it clear.