Silver
Quick Answer
Lawful wealth, a righteous spouse, or pure words.
Classical Interpretation (Ibn Sirin)
Unlike gold (which often carries negative connotations for men in dreams), silver is universally positive. It signifies pure, lawful (Halal) wealth, religious devotion, and righteous speech. Finding silver coins or jewelry means finding a good, pious spouse or being blessed with righteous children.
Quranic Context
"And there will be circulated among them vessels of silver and cups having been [created] clear [as glass]. (Quran 76:15)"