«رَبِّنَا رَيَّحِ الْعِرْيَانْ مِنْ غَسِيلِ الصَّابُونْ»

A person with no clothes has nothing to launder, so soap and washing are simply not their concern. The saying describes someone who has no need of a particular thing, because not having it also releases them from every chore and expense attached to it.

It can also carry a wry, resigned philosophy: having little brings its own kind of ease, since possessions demand upkeep, worry, and cost. The speaker half-seriously ranks the calm of poverty above the troubles of plenty, without literally celebrating nakedness or poverty.

Use it, often with a wry smile, when someone's lack of a thing also spares them the trouble it brings, or when contrasting the ease of having little with the cares of owning much. Its appeal to God is idiomatic framing, not a theological claim.