Asamoah Gyan has been warned by the United Arab Emirates FA for having "unethical hair".
NAN reports that the rule bans mohawk-style haircuts.
The rules are derived from Islamic teachings, some of which ban "Qaza" hairstyles, which include mohawks, because only part of the head is shaved, leaving other parts unshaven. Saudi Arabia goalkeeper Waleed Abdullah was recently told by a referee to cut his "un-Islamic" hair immediately before a match.
The decision on whether a player's hair is acceptable is left to match officials, some of whom are concerned about setting a bad example for children.
The 31-year-old Ghanaian is now on a season-long loan at Arabian Gulf League side, Al Ahli, based in Dubai.
The UAEFA send a player's club a warning letter in the first instance, with punishments escalating to a fine and then a suspension if he does not comply.
The Ghana striker is now playing with Al Ahli in the Arabian Gulf League.
Ahdaaf says that dozens of other players are in trouble, including Suhail al-Mansoori, who boasts an nearly identical barnet to Abdulrahman, prompting even more confusion over the guidelines.