Has there ever been a rule...

[bas2456]

In my game this morning, one of the teams only had seven players. One fouled out, and another was injured, so they were playing with five.

After the game, my partner said he thought there was a rule that allowed a coach to "buy" a disqualified player back into the game with a technical foul. This was only if the disqualification of another player led to the team playing with four players.

Was there ever a rule like this, or is he just crazy?