I assume you are saying it is an uncontested indirect foul by the M on defence?
In which case, if no pass was made, players go to where they were when the foul occurred (10.2.1) and the stall count goes to 1 (9.5.1).
Otherwise the continuation rule applies, and if the pass was completed, play continues. If the pass was not complete, the disc goes back to the thrower and players must return to where they were when the throw was made (10.2.2), unless 16.3 applies.