Sahih Bukhari Volume 3, Book 34, Hadith Number 426.

Narated By Ibn ‘Abbas : Once ‘Umar was informed that a certain man sold alcohol. ‘Umar said, “May Allah curse him! Doesn’t he know that Allah’s Apostle said, ‘May Allah curse the Jews, for Allah had forbidden them to eat the fat of animals but they melted it and sold it.”