Thus I have heard: One time, the Buddha was staying at Anāthapiṇḍada’s Park in Jeta’s Grove of Śrāvastī.
It was then that the Bhagavān addressed the monks, “One should cultivate one thing and disseminate one thing. After cultivating this one thing, they’ll become well known and achieve a great reward and all good and complete attainments. They’ll attain the sweet-tasting dew and arrive at the unconditioned state. They then will achieve spiritual knowledge, dispel their confused ideas, win the fruits of the ascetic, and bring about nirvāṇa themselves. What’s this one thing? It’s called recollecting the Buddha.”
The Buddha addressed the monks, “How does someone who cultivates the recollection of the Buddha become well known, achieve a great reward and all good and complete attainments, attain the sweet-tasting dew, and arrive at the unconditioned state? How do they achieve spiritual knowledge, dispel their confused ideas, win the fruits of the ascetic, and bring about nirvāṇa themselves?”
The monks then said to the Bhagavān, “What the Tathāgata says is the source of the teachings. Please, Bhagavān, explain the wonderful meaning of this for the monks. After we hear it from the Tathāgata, the monks will accept and retain it.”
The Bhagavān then told the monks, “Listen closely! Listen closely, and consider it well. I will discern this for you in detail.”
They replied, “Yes, Bhagavān.”
Once the monks had accepted the teaching, the Bhagavān told them, “Suppose a monk sits cross-legged with correct posture and thought and fixes his attention on what’s in front of him. With no other idea, he focuses on recollecting the Buddha.
“He visualizes the Tathāgata’s form until it never leaves his eyes. Once it doesn’t leave his eyes, then he recollects the Tathāgata’s virtues: ‘The Tathāgata’s body is made of diamond. Having perfected the ten powers, he’s courageous amidst his assembly with four kinds of fearlessness. The Tathāgata’s appearance is handsome, unmatched, and not tiresome to watch. His discipline and virtue are accomplished, unbreakable like diamond, and pure and flawless like beryl.’
“The Tathāgata’s samādhi never lacked anything. Once calmed, he was forever tranquil, without another thought. Arrogance, violence, and the passions were pacified. He had completely eliminated the entangling bonds of wishes, angry notions, confused thoughts, and doubts.
“The Tathāgata’s body of wisdom was a knowledge without limit or impediment. The Tathāgata’s body had accomplished liberation, had reached the end of destinations, and no longer would decide: ‘I will fall into birth and death again.’ The Tathāgata’s body had reached knowing and seeing the city [of nirvāṇa]. He knew whether other people had the capacity to be liberated or not. ‘Here they die, and there they’re born. Round they turn, reborn until the end of birth and death.’ He fully knew who was liberated and who wasn’t.
“This is how someone who cultivates the recollection of the Buddha will become well known, achieve a great reward and all good and complete attainments, attain the sweet-tasting dew, and arrive at the unconditioned state. They’ll achieve spiritual knowledge, dispel their confused ideas, win the fruits of the ascetic, and bring about nirvāṇa themselves.
“Therefore, monks, one should constantly recollect the Buddha and not part from it. Then, they’ll win these good virtues. Thus, monks, you should train yourselves.”
When the monks heard what the Buddha taught, they rejoiced and approved.