Vasetthasutta 2.3

2.3

Sabbe cepi, bhante, khattiyā aṭṭhaṅgasamannāgataṃ uposathaṃ upavaseyyuṃ, sabbesampissa khattiyānaṃ dīgharattaṃ hitāya sukhāya. Sabbe cepi, bhante, brāhmaṇā …pe… vessā … suddā aṭṭhaṅgasamannāgataṃ uposathaṃ upavaseyyuṃ, sabbesampissa suddānaṃ dīgharattaṃ hitāya sukhāyā”ti.

If all the aristocrats, brahmins, peasants, and menials were to observe this sabbath with its eight factors, it would be for their lasting welfare and happiness.”