1At Sāvatthī. "Bhikkhus, develop concentration. A bhikkhu who is concentrated understands things as they really are. [n.375] As at SN22.5

"And what does he understand as it really is? He understands as it really is: ‘This is suffering.’ He understands as it really is: ‘This is the origin of suffering.’ He understands as it really is: ‘This is the cessation of suffering.’ He understands as it really is: ‘This is the way leading to the cessation of suffering.’

"Bhikkhus, develop concentration. A bhikkhu who is concentrated understands things as they really are.

2"Therefore, bhikkhus, an exertion should be made to understand: ‘This is suffering.’ [n.376] Tasmātiha bhikkhave idaṁ dukkhan ti yogo karaṇīyo. Spk: Since a concentrated bhikkhu understands the Four Noble Truths as they really are, therefore you should make an exertion to become concentrated in order to understand the four truths as they really are. And since the round of existence increases for those who do not penetrate them, but stops increasing from the time they are penetrated, therefore you should make an exertion to understand them, thinking, "Let the round not increase for us." An exertion should be made to understand: ‘This is the origin of suffering.’ An exertion should be made to understand: ‘This is the cessation of suffering.’ An exertion should be made to understand: ‘This is the way leading to the cessation of suffering.’"

1Sāvatthinidānaṁ. … pe … "Samādhiṁ, bhikkhave, bhāvetha. Samāhito, bhikkhave, bhikkhu yathābhūtaṁ pajānāti.

Kiñca yathābhūtaṁ pajānāti? ‘Idaṁ dukkhan’ti yathābhūtaṁ pajānāti, ‘Ayaṁ dukkhasamudayo’ti yathābhūtaṁ pajānāti, ‘Ayaṁ dukkhanirodho’ti yathābhūtaṁ pajānāti, ‘Ayaṁ dukkhanirodhagāminī paṭipadā’ti yathābhūtaṁ pajānāti.

Samādhiṁ, bhikkhave, bhāvetha. Samāhito, bhikkhave, bhikkhu yathābhūtaṁ pajānāti.

2Tasmātiha, bhikkhave, ‘idaṁ dukkhan’ti yogo karaṇīyo, ‘Ayaṁ dukkhasamudayo’ti yogo karaṇīyo, ‘Ayaṁ dukkhanirodho’ti yogo karaṇīyo, ‘Ayaṁ dukkhanirodhagāminī paṭipadā’ti yogo karaṇīyo"ti.

Paṭhamaṁ.