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Imam Ibn al-Qayyim stated in his book Zâd al-Ma`âd (5/761) that pig hair products are unlawful. He said: “Swine is unlawful as a whole including all its external and internal parts.”

In the Consensus Encyclopedia of Islamic Law (1/400), it states: “Muslims have agreed as a matter of consensus that it is unlawful to use swine’s hair for beading.” This claim of consensus was given by Ibn Hazm in al-Muhallâ, page 988.

The truth is, however, that some scholars permitted the use of pig hair for stringing beads. Nevertheless, I advise you, not to sell or use anything that is made from pig hair.

Source: Islam Today