The Jar
Scholars have said that drinking from a jar or any vessel in a dream may indicate the depletion of a portion of the dreamer's life, according to the quantity drunk. It has also been said that a jar may symbolize a woman or a servant, and if it is filled with oil, honey, or milk, it might represent stored wealth. As for cups (kizan), they symbolize maidservants and servants, and drinking from them may mean acquiring wealth from them.
Per Ibn Sirin's Muntakhab al-Kalam fi Tafsir al-Ahlam
Note: These are traditional scholarly interpretations (ijtihad) drawn from a specific classical source — not a binding religious ruling, fortune-telling, or a prediction of the future.