[225] 10. This indeed was said by the Blessed One, said by the Arahant, so I have heard:
"Bhikkhus, a bhikkhu should dwell wakeful (jāgaro) — mindful (sato), clearly comprehending (sampajāno), concentrated (samāhito), gladdened (pamudito), and serene (vippasanno) — and therein he should see with insight, at the proper time, into wholesome dhammas (kusalesu dhammesu). Bhikkhus, for a bhikkhu dwelling wakeful — mindful, clearly comprehending, concentrated, gladdened, serene, and therein seeing with insight at the proper time into wholesome dhammas — one of two fruits is to be expected: final knowledge (aññā) in this very life or, if there is a residue of clinging (upādisese) remaining, the state of a non-returner (anāgāmitā)."
The Blessed One spoke this meaning. Concerning this, it is said:
"You who are wakeful, hear this!
You who are asleep, awaken!
Wakefulness is better than sleep;
for one who is wakeful there is no peril.
One who is wakeful, mindful, clearly comprehending,
concentrated, joyful, and serene,
rightly examining the Dhamma at the proper time,
become unified in mind (ekodibhūto), he would dispel the darkness.
Therefore, indeed, one should devote oneself to wakefulness:
an ardent (ātāpī) bhikkhu, discerning, a gainer of jhāna,
having cut off the fetter (saṃyojanaṃ) of birth and aging,
would touch right here the unsurpassed enlightenment (sambodhi)."
This meaning too was spoken by the Blessed One; so I have heard. The Tenth.
English translation from the Pali (Siam Raṭṭha edition) — under review, not for citation.