What is the ruling on one who buys pork with his money and feeds it to non-Muslims, and what is the ruling on doing so once?

Buying and selling pork is unanimously forbidden, according to the Prophet, peace and blessings be upon him: "Indeed, Allah and His Messenger have forbidden the sale of wine, dead animals, pigs, and idols." Its price is unlawful, whether it is fed to the People of the Book, to dogs, or to others. Eating it is forbidden by the Qur'an, Sunnah, and consensus. Whoever sold it or bought it must offer sincere repentance, not return to such an act, and feed people from lawful and wholesome sources.