Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The beard in a dream for a man is wealth, honor, and prestige. Its length indicates high status and wealth. Whoever sees his beard grow long enough to reach his navel is committing a sin.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The beard indicates adornment and dignity. Plucking it indicates loss of wealth. Shaving it indicates loss of prestige and position.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The beard is interpreted as wealth and prestige. Whoever sees his beard is white has gained dignity and reverence.