“The believer does not insult the honor of others, nor curse, nor commit improper deeds, nor is he foul.” (Tirmidhi, Birr wa Sila, 48) Islam commands courtesy in everything. Because Islam invites believers to be freed of any type of asperity, ugliness, disrespect and impertinence. The Prophet Muhammad forbade evil words and attitudes such as curse, damnation, and profanity. A good Muslim is the one who stays away from rudeness in his words and actions and is not hurtful; constructive, conciliatory and courteous.