Your opponent has committed a foul.
1-41 Coaching
1. During your match, it is a foul if you ask for, or intentionally receive, assistance in planning or executing any shot.
2. It is a foul if you receive unsolicited assistance from a spectator associated with you (e.g., spouse/partner, relative, teammate). “Assistance” includes being alerted to an opponent’s foul.
1-23 Calling Fouls / Fouls Not Called
1. A foul may only be called by a player playing in the game or by a referee that has been properly called to the table. See Rule 1.41, Coaching, for more information concerning exceptions in team play.