Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
Bloodletting a vein in a dream indicates loss of wealth or illness. If blood comes out, it is righteousness in religion. If pus comes out, it is worry and grief.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
Bloodletting indicates healing from illness. It may also indicate travel.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
Bloodletting is interpreted as goodness. Whoever sees himself being bled, his worry will disappear.