Pakistan coach Bob Woolmer has voiced concern over a fielding tactic used by Michael Vaughan in England's first tour match against a PCB Patron's XI.
The touring skipper moved from slip to leg-slip several times to the spinners while the ball was in mid-flight.
It goes against the laws of the game and Woolmer wants some action.
"We would like the match referee and umpires to give a clear definition of how the law is to be read after what happened in Rawalpindi," Woolmer said.
"I can understand the principle behind the ploy by Vaughan, but we have to be clear on whether the law allows such things before the Tests.
"We would like the Tests to be played in a proper spirit."
Vaughan said after the game that he would consider using the tactic in the first Test against Pakistan in Multan.
"If a player is going to sweep, it is an option," he said, apparently unaware that it contravenes Law 41.
The law states: "Any significant movement by any fielder after the ball comes into play and before the ball reaches the striker is unfair. In the event of such unfair movement, either umpire shall call and signal dead ball."
If Vaughan insists on trying the ploy, the potential is there for another embarrassing row, such as the Mike Gatting-Shakoor Rana clash on the 1987 tour.
A day's play was lost when then captain Gatting moved a fielder while spinner Eddie Hemmings was coming in to bowl.
Umprie Rana intervened and, after a verbal altercation with the England skipper, refused to carry on until he received an apology.