俱舍論記 22.51

22.51

「道諦非苦至唯顯有漏」者，答。道諦非苦，違逆聖心是行苦相，非緣聖道起四行相違逆聖心，由此聖道引眾苦盡。又通經言若觀諸有為涅槃寂靜者，釋云：亦由先見彼有為法是其苦性，後觀彼法上滅以為寂靜，故彼經說有為之言唯顯有漏。道諦非苦亦無涅槃，故有為之言不通道諦。

Regarding "The truth of the path is not suffering... only reveals the sāsrava": this is the answer. The truth of the path is not suffering; opposing the noble mind is the characteristic of the suffering of conditioned existence, and the four aspects arising with the noble path as object do not oppose the noble mind, because this noble path leads to the exhaustion of all suffering. Moreover, resolving the sūtra passage "If one contemplates all conditioned phenomena as nirvāṇa is tranquil", it is explained: It is also because one first sees that those conditioned phenomena are of the nature of suffering, and afterwards contemplates the cessation above those phenomena as tranquil; therefore, the words "conditioned phenomena" spoken in that sūtra only reveal the sāsrava. The truth of the path is not suffering, nor is it devoid of nirvāṇa; therefore the words "conditioned phenomena" do not extend to the truth of the path.