Proverbs 6:4 KJV

Give not sleep to thine eyes, nor slumber to thine eyelids.
Proverbs 6:4, King James Version

In context

3 Do this now, my son, and deliver thyself, when thou art come into the hand of thy friend; go, humble thyself, and make sure thy friend.

4 Give not sleep to thine eyes, nor slumber to thine eyelids.

5 Deliver thyself as a roe from the hand of the hunter, and as a bird from the hand of the fowler.