Ecclesiastes 3:10

I have seen the travail, which God hath given to the sons of men to be exercised in it.
— Ecclesiastes 3:10, King James Version

In other translations

World English Bible (WEB)

I have seen the burden which God has given to the sons of men to be afflicted with.

American Standard Version (ASV)

I have seen the travail which God hath given to the sons of men to be exercised therewith.

Young's Literal Translation (YLT)

I have seen the travail that God hath given to the sons of man to be humbled by it.