Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The comb in a dream is a beneficial, just man or a scholar. Combing hair with it indicates the removal of worry and healing from illness. Combing the beard indicates following the Sunnah.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The comb indicates joy and happiness. For a merchant, it is profit, and for a farmer, fertility.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The comb is interpreted as a knowledgeable man. Whoever sees himself combing his hair is getting rid of debts and worries.