It is narrated from Hazrat Jabir bin Abdullah (may Allah be pleased with him). He says: I heard the Messenger of Allah (peace and blessings be upon him) in the year of the conquest of Makkah saying: Indeed, Allah and His Messenger have declared wine, swine, carrion, and idols to be forbidden. The narrator says: A man asked, "O Messenger of Allah (peace and blessings be upon him)! What is your opinion about the fat of carrion? For it is used to oil ships and skins, and lamps are lit with it." The Prophet (peace and blessings be upon him) said: May Allah destroy the Jews! When Allah made the fat (of carrion) unlawful for them, they melted it, sold it, and consumed its price (income).