By vanity - literally, “by a breath,” that is, by a windfall, or sudden stroke of fortune, not by honest labor. The general meaning seems to…

Wealth gotten by vanity. —As we would say, “in an unsatisfactory manner,” that is to say, by dishonesty.

Wealth [gotten] by vanity shall be diminished. In an unjust or unlawful way, either by robbery and theft, as Aben Ezra; o…

Wealth gotten by dishonesty or vice has a secret curse, which will quickly destroy it.