觀無量壽佛經義疏 3.183

3.183

「『聞眾音聲讚歎四諦。』」贊四諦者，順所習故。苦集二諦，世間因果，是所斷；滅道二諦，出世因果，是所證。四法皆實，故並名諦。三、得道。

"‘He hears the assembly of sounds praising the four truths.’" Praising the four truths accords with what he had practiced. The two truths of suffering and origination are worldly cause and effect, which are to be severed; the two truths of cessation and the path are supramundane cause and effect, which are to be realized. Because all four dharmas are real, they are all called truths. Third, attaining the Way.