Volume 7 · Book 72 · Hadith 820
Narrated Ibn Umar Allah's Apostle said, "Allah has cursed such a lady as lengthens (her or someone else's) hair artificially or gets it lengthened, and also a lady who tattoos (herself or someone else) or gets herself tattooed.
— Sahih Bukhari, Volume 7, Book 72: Dress, Hadith #820