He who lies long in bed his estate feels it.

The proverb warns that neglecting work and responsibilities can have material consequences. Time spent avoiding necessary tasks may leave a person's property or finances worse off.

Its broader point is about the cost of inactivity, not the value of sleep itself. Responsibilities still need attention, and repeatedly putting them aside can erode what someone has built.

Use it to caution someone against habitual idleness when neglected duties could affect their livelihood or possessions. It is less suitable when time in bed is needed for rest or recovery.