Psalms 32:9

32:9 Don't be like the horse, or like the mule, which have no understanding, Who are controlled by bit and bridle, or else they will not come near to you.
-World English Bible

Other Translation

32:9 Be ye not as the horse, [or] as the mule, [which] have no understanding: whose mouth must be held in with bit and bridle, lest they come near unto thee.
-King James Version