Charles Ellicott Commentary Ecclesiastes 9:10

"Whatsoever thy hand findeth to do, do [it] with thy might; for there is no work, nor device, nor knowledge, nor wisdom, in Sheol, whither thou goest." — Ecclesiastes 9:10 (ASV)

Your hand finds.—Leviticus 12:8; Judges 9:33; and marginal references.

The grave.—Sheol (John 9:4).