Ecclesiastes 9:10

10 Whatever your hand finds to do, do it with all your might, for in the realm of the dead, where you are going, there is neither working nor planning nor knowledge nor wisdom.

Read Ecclesiastes 9:10 Using Other Translations

Whatsoever thy hand findeth to do, do it with thy might; for there is no work, nor device, nor knowledge, nor wisdom, in the grave, whither thou goest.
Whatever your hand finds to do, do it with your might,for there is no work or thought or knowledge or wisdom in Sheol, to which you are going.
Whatever you do, do well. For when you go to the grave, there will be no work or planning or knowledge or wisdom.