Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
Sand in a dream is wealth. Walking on it indicates striving in worldly affairs. Collecting it indicates collecting money. Abundant sand indicates worry and grief.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
Sand indicates healing from illnesses. It may also indicate travel. Red sand indicates a position.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
Sand is interpreted as wealth. Whoever sees himself digging in it is plotting to seek wealth.