Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The tanner in a dream is a man who treats difficult matters and reforms them. Tanning leather indicates reforming a corrupt woman.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The tanner indicates a man who travels much and gains wealth with fatigue.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The tanner is interpreted as a man who reconciles people.