Fiqh-us-Sunnah Volume 1, Purification and Prayer, Fiqh 1.009.
Section : Pig’s meat.
According to the verse (al-An’am 145) quoted earlier, items mentioned therein are impure. The pronoun ‘they’ refers to all three of the mentioned items. It is, however, allowed to knit with the hair of a pig according to most of the scholars.