Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
Drinking clear, fresh water in a dream indicates a long life, a pure livelihood, and healing from illnesses. Drinking murky water indicates illness and worry. Drinking hot water indicates torment and hardship.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
Drinking indicates guidance and knowledge. Whoever sees himself drinking from a cup will gain wealth from a woman. Drinking from a river indicates gaining wealth from a ruler.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
Drinking is interpreted as sustenance and benefit. Drinking sea water indicates gaining wealth from a king.