"Those who permit silk will be turned into an ape or pig?
Abu Dawud, Book 32, Number 4028:
Narrated AbuAmir or AbuMalik:
AbdurRahman ibn Ghanam al-Ash'ari said: AbuAmir or AbuMalik told me--I swear by Allah another oath that he did not believe me that he heard the Apostle of Allah (peace_be_upon_him) say: THERE WILL BE AMONG MY COMMUNITY PEOPLE WHO WILL MAKE LAWFUL (THE USE OF) KHAZZ AND SILK. SOME OF THEM WILL BE TRANSFORMED INTO APES AND SWINE."
This is Islam