Yahya related to me from Malik from Abdullah ibn Dinar from
Abu's-Salih as-Samman that Abu Hurayra used to say, "Anyone who has
wealth on which he has not paid zakat will, on the day of rising, find
his wealth made to resemble a whiteheaded serpent with a sac of venom
in each cheek which will seek him out until it has him in its power,
saying, 'I am the wealth that you had hidden away.' "
Muwatta Malik Book 17, Hadith 24