It is narrated from Abu Huraira (may Allah be pleased with him) that he said: Whoever possesses wealth and does not pay its zakat, then on the Day of Resurrection his wealth will be turned into a bald snake with two spots over its eyes. It will seek him out until it finds him and will say, "I am your treasure."
Hadith Referenceمسند الإمام الشافعي / كتاب الزكاة / 683
Hadith Takhrijصحيح موقوفا وقد صح مرفوعا : اخرجه البخاري، الزكاة، باب اثم مانع الزكاة (1403)۔