Ruud van Nistelrooy has ordered his players to live by a golden rule set in motion by Sir Alex Ferguson at Manchester United.
The Dutchman continues his interim spell in charge of United as they host Chelsea on Sunday afternoon before Ruben Amorim arrives from Sporting Lisbon on November 11.
While Amorim will become United's seventh manager since Sir Alex retired in 2013, Van Nistelrooy does not want his stars to lose sight of the Scot's key message.
That demand comes despite Ferguson, 82, being chopped from his £2million-per-year ambassador role with the club amid Sir Jim Ratcliffe's cost-cutting regime.