3 part question 3 of 3

[wbrown]

Same game visiting team winning by two, with 90 seconds to go. Running a pass and weave stall to kill the clock. The home team is trying to foul but can't catch up with the ball. A1 has the ball and B1 give a slight and I mean slight tug on the back of his jersey in an attempts to foul and stop the clock. I pass on the call because it had not effect on the play. A1 takes two dribbles and passes the ball to A2 who fumbles it OB. Visiting coach goes crazy starts screaming at me because I did not call the slight hold. He screams "where the foul call you should have called the foul."

My question is do you call the slight grab to stop the clock and do you call it intentional or do you pass on the call since it had no effect on the play?