Language:
كتاب اللباس
77
Dress
(85)
Chapter: The lady who lengthens hair artificially
(85)
باب الْمَوْصُولَةِ
Sahih al-Bukhari 5943

Narrated Ibn Mas`ud:

Allah has cursed those women who practise tattooing or get it done for themselves, and those who remove hair from their faces, and those who create spaces between their teeth artificially to look beautiful, such ladies as change the features created by Allah. Why then shall I not curse those whom Allah's Messenger (ﷺ) has cursed and who are cursed in Allah's Book too?

حَدَّثَنِي مُحَمَّدُ بْنُ مُقَاتِلٍ، أَخْبَرَنَا عَبْدُ اللَّهِ، أَخْبَرَنَا سُفْيَانُ، عَنْ مَنْصُورٍ، عَنْ إِبْرَاهِيمَ، عَنْ عَلْقَمَةَ، عَنِ ابْنِ مَسْعُودٍ ـ رضى الله عنه ـ قَالَ لَعَنَ اللَّهُ الْوَاشِمَاتِ، وَالْمُسْتَوْشِمَاتِ، وَالْمُتَنَمِّصَاتِ وَالْمُتَفَلِّجَاتِ لِلْحُسْنِ، الْمُغَيِّرَاتِ خَلْقَ اللَّهِ، مَا لِي لاَ أَلْعَنُ مَنْ لَعَنَهُ رَسُولُ اللَّهِ صلى الله عليه وسلم وَهْوَ فِي كِتَابِ اللَّهِ‏.‏
Reference : Sahih al-Bukhari 5943
In-book reference : Book 77, Hadith 158
USC-MSA web (English) reference : Vol. 7, Book 72, Hadith 826
  (deprecated numbering scheme)