It is narrated from Sayyiduna al-Mughirah bin Shu'bah (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "Whoever sells wine, let him (as well) butcher pigs and sell them." (That is, both are equally forbidden.)
Hadith Referenceالمعجم الكبير للطبراني / باب الميم / 18009