This discourse was taught by the Blessed One, taught by the Arahant, the fully enlightened Supreme Buddha. This is as I heard:
“There is one quality, monks, which, when developed and pursued, ensures both kinds of welfare—welfare in this life and welfare in lives to come. What is that one quality? It is diligence in developing wholesome deeds. Monks, this is the one quality that, when developed and pursued keeps both kinds of welfare—welfare in this life and welfare in lives to come.”
This is the meaning of what the Blessed One said. So, with regard to this, it was said:
The wise praise diligence in doing deeds of merit, for one who is wise and diligent achieves both kinds of welfare: Welfare in this life and welfare in lives to come. The intelligent one who achieves both kinds of welfare is called a wise person.
This, too, is the meaning of what was said by the Blessed One. This is exactly as I heard.