Narrated Umm Salamah, Ummul Mu’minin (RA): I used to wear gold ornaments. I asked: Is that a treasure (kanz), Messenger of Allah (peace be upon him)? He replied: whatever reaches a quantity on which zakat is payable is not a treasure (kanz) when the zakat is paid.
Sunan Abi Dawud, Book 9, Hadith 9
