(4) باب الْكَنْزِ مَا هُوَ وَزَكَاةِ الْحُلِيِّ
Narrated Umm Salamah, Ummul Mu'minin:
I used to wear gold ornaments. I asked: Is that a treasure (kanz), Messenger of Allah? He replied: whatever reaches a quantity on which zakat is payable is not a treasure (kanz) when the zakat is paid.
Reference: Sunan Abi Dawud 1564
In-book reference: Book 9, Hadith 9
English translation: Book 9, Hadith 1559