Football’s global rulebook leaves little room for ambiguity when it comes to displays of religious sentiment. According to Law 4 of the International Football Association Board’s Laws of the Game, players are strictly prohibited from showcasing any political, religious, or personal messages on their clothing.
The Law reads: “Equipment must not have any political, religious or personal slogans, statements or images. Players must not reveal undergarments that show political, religious, personal slogans, statements or images, or advertising other than the manufacturer’s logo. For any offence the player and/or the team will be sanctioned by the competition organiser, national football association or by Fifa.”