Sahih al-Bukhari, Volume 7, Book 72, Hadith 823 (USC-MSA) ⓘ
Narrated Ibn `Umar: The Prophet has cursed the lady who lengthens her hair artificially and the one who gets her hair lengthened, and also the lady who tattoos (herself or others) and the one who gets herself tattooed.
حَدَّثَنِي مُحَمَّدٌ، حَدَّثَنَا عَبْدَةُ، عَنْ عُبَيْدِ اللَّهِ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ قَالَ لَعَنَ النَّبِيُّ صلى الله عليه وسلم الْوَاصِلَةَ وَالْمُسْتَوْصِلَةَ، وَالْوَاشِمَةَ وَالْمُسْتَوْشِمَةَ.
also referenced under: Book 77, Hadith 155 (In-Book) & Hadith 5940 (DarusSalam)