Psalm 32:9

9 Do not be like the horse or the mule, which have no understanding but must be controlled by bit and bridle or they will not come to you.

Read Psalm 32:9 Using Other Translations

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.
Be not like a horse or a mule, without understanding, which must be curbed with bit and bridle, or it will not stay near you.
Do not be like a senseless horse or mule that needs a bit and bridle to keep it under control.”