If I need to clean up some physical play away from the ball, I may say something ... might quietly mention something to him or her during a dead ball.
Agree. It may even be in regard to some slightly unsporting activity (maybe a slight taunt) that needs to be nipped in the bud. Good time is when one's partner is reporting a foul.
For the young'uns:
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"For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life." (John 3:16)
I was in prison and you came to visit me. (Matthew 25:36)