Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The cave in a dream is a shelter, a refuge, and security from fear. Entering it indicates salvation from enemies. For the prisoner, it is relief, and for the sick, healing.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The cave indicates a long life. It may also indicate hiding secrets. Whoever sees himself in a cave is seeking refuge with a great man.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The cave is interpreted as a servant, a father, or a wife. A dark cave indicates worry and grief.