EAR-RINGS; NOSE-RINGS. In the East, it is the universal custom of Muslim women to wear ear-rings, and they are not unfrequently worn by young men and children. Gold ear-rings are, however, forbidden in the Traditions; for Abu Hurairah relates that the Prophet said, “Whoever wishes to put into the ear or the nose of a friend a ring of hell fire, let him put in the ear or the nose of his friend a gold ring… let your ornament be of silver.” And Ashas’ bint Yasid relates the same tradition. (Mishkat, book xx c 11 part 2).
Based on Hughes, Dictionary of Islam