A mustache signifies wealth and property.
Seeing it shortened signifies following the Prophetic Sunnah. Shaving or trimming it is interpreted as good and, for one in debt, the ability to repay.
Seeing it grow again signifies gaining strength.
Seeing a small child's mustache grow signifies the child's growth and joy. For one accustomed to trimming beard and mustache, doing so in a dream signifies relief from worry and hardship. A pregnant woman seeing herself with a mustache signifies a son; for a woman who is not pregnant, the text interprets it as childlessness. The mustache also signifies dignity and imposing presence.