Numbers 22:26-28

Young's Literal Translation

²⁶ and the messenger of Jehovah addeth to pass over, and standeth in a strait place where there is no way to turn aside -- right or left --

²⁷ and the ass seeth the messenger of Jehovah, and croucheth under Balaam, and the anger of Balaam burneth, and he smiteth the ass with a staff.

²⁸ And Jehovah openeth the mouth of the ass, and she saith to Balaam, `What have I done to thee that thou hast smitten me these three times?'