Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
Sleeping in a dream is heedlessness and unemployment. Sleeping on the back indicates control over the world. Sleeping on the stomach indicates loss of wealth. Sleeping in a graveyard indicates death.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
Sleeping indicates rest from fatigue. For the fearful, it is security. Sleeping in the mosque indicates trust in God.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
Sleeping is interpreted as heedlessness. Whoever sees himself sleeping is neglecting an important matter.