Question: What is the ruling on a person who scorns one of the Sunan (traditions) of the Prophet Muhammad (peace be upon him)? For example, a person who scorns the beard or bearded people and mockingly call them, “O bearded”. We hope your eminence will explain to us the ruling on the person who says so.
Answer: Scorning the beard is an act greatly disapproved of by Islaamic law. If the person who says, “O bearded” intends to scorn the Sunnah, it is considered Kufr (disbelief). If he says it just to specify the person he is calling, it is not considered Kufr (disbelief)… read more here.