This discourse was taught by the Blessed One, taught by the Arahant, the fully enlightened Supreme Buddha. This is as I heard:
“One thing, monks, when arising in the world, arises for the welfare of many people, for the happiness of many people, for the welfare and happiness of many people, for the benefit, welfare, and happiness of gods and humans. What is that one thing? It is the unity in the community of monks. When the community of monks is united, there are no arguments with one another, there is no abuse of one another, there are no quarrels between one another, and no abandoning of one another. In this situation, those who are displeased with the path become pleased, while those already pleased become pleased all the more.”
This is the meaning of what the Blessed One said. So, with regard to this, it was said:
Happiness is unity in the community of monks. Happiness is promoting the unity. Delighting in unity, established in Dhamma, he doesn’t decline supreme security from bondage, Nibbāna. By making the Sangha united, he rejoices in heaven for an eon.
This, too, is the meaning of what was said by the Blessed One. This is exactly as I heard.