Law 12 Fouls and Misconduct - Disciplinary Sanctions.
The yellow card is used to communicate that a player, substitute or substituted player has been cautioned.
The red card is used to communicate that a player, substitute or substituted player has been sent off.
Only a player, substitute or substituted player may be shown the red or yellow card.
The referee has the authority to take disciplinary sanctions from the moment he enters the field of play until he leaves the field of play after the final whistle.
A player who commits a cautionable or sending-off offence, either on or off the field of play, whether directed towards an opponent, a team-mate, the referee, an assistant referee or any other person, is disciplined according to the nature of the offence committed.
The red card is used to communicate that a player, substitute or substituted player has been sent off.
Only a player, substitute or substituted player may be shown the red or yellow card.
The referee has the authority to take disciplinary sanctions from the moment he enters the field of play until he leaves the field of play after the final whistle.
A player who commits a cautionable or sending-off offence, either on or off the field of play, whether directed towards an opponent, a team-mate, the referee, an assistant referee or any other person, is disciplined according to the nature of the offence committed.