One morning, Upatissa was walking in Rajgir. His eyes fell on a monk who was offering alms. You are wearing your robes. Walk calmly. and had a calm face that made the man who had been searching for the teacher for a long time stop and look. That monk is Phra Assachi One of the Panchavaggi Buddhas. Upatissa immediately wanted to ask who the teacher was and what he taught. But I saw that he was offering alms. So don't disturb. He just followed at a distance until Phra Assachi received the food and found a seat.
The commentary adds details: When he saw that Phra Assaji wanted to sit. Upatissapu lays down the base of Paripakacha's offerings. and when the elder monk finished He offered water in his own container. Before starting to ask questions He did not just wait for the monks to stop walking. But he did good deeds to people whose names he didn't even know. When you get a chance Upatissa then respectfully asked, Who is he ordained? Who is a teacher and whose Dhamma do you like? Phra Assaji responded according to the words recorded in the Vinaya Pitaka.
“You have a great monk who is a Shakti. His Majesty was ordained from the Shakti family. We ordain in dedication to the Blessed One. The Blessed One is our teacher. and we like the Dhamma of that Blessed One.”
When Upatissa further asked, How did the Buddha speak and teach? Phra Assachi said humbly: He was a new person, not long ago ordained, but still unable to teach the Dhamma in an unusual way. But the main idea will be briefly stated. Upatissa then replied:
“Come on, old people, whether young or old, say this.
Speak only to me.
I only want the main idea.
Why would you make too many consonants?”
Phra Assaji then said Ye Dhammā Hetappabhava, a verse that became a turning point in Upatissa's life.
Ye dhammā hetuppabhāva
Tesaṃ hetuṃ tathāgato ah
Tesañca yo nirodho
Evaṃvādi Mahasamano
“What dhamma arises from a cause?
The Tathagata explained the reasons for those dhamma.
and the extinction of those dhamma
The high priest had the habit of speaking like this.”
While listening to that mantra Upatissa gained Dhamma sight and attained Sotapattifruit. Being a Sotapanna, he clearly saw that “anything has a natural occurrence. All things naturally cease.” He knew that the Buddha was residing at Veluvan. But not going immediately Because there was someone waiting to hear the news as promised.
According to Atthakatha before separating Upatissa fell at the feet of Phra Assaji. Do Prathaksin three times. Then asked the Elder to go ahead. As for himself, he will go back and release the promise he made to his friends. Then he took Kolita along to the Buddha's office.