Language:
كتاب اللباس
77  
Dress
(82)
Chapter: Creating artificial spaces between the teeth to look beautiful
(82)
باب الْمُتَفَلِّجَاتِ لِلْحُسْنِ
Sahih al-Bukhari 5931

Narrated `Abdullah:

Allah has cursed those women who practise tattooing and those who get themselves tattooed, and those who remove their face hairs, and those who create a space between their teeth artificially to look beautiful, and such women as change the features created by Allah. Why then should I not curse those whom the Prophet (ﷺ) has cursed? And that is in Allah's Book. i.e. His Saying: 'And what the Apostle gives you take it and what he forbids you abstain (from it).' (59.7)

حَدَّثَنَا عُثْمَانُ، حَدَّثَنَا جَرِيرٌ، عَنْ مَنْصُورٍ، عَنْ إِبْرَاهِيمَ، عَنْ عَلْقَمَةَ، عَنْ عَبْدِ اللَّهِ، لَعَنَ اللَّهُ الْوَاشِمَاتِ، وَالْمُسْتَوْشِمَاتِ، وَالْمُتَنَمِّصَاتِ وَالْمُتَفَلِّجَاتِ لِلْحُسْنِ، الْمُغَيِّرَاتِ خَلْقَ اللَّهِ تَعَالَى، مَالِي لاَ أَلْعَنُ مَنْ لَعَنَ النَّبِيُّ صلى الله عليه وسلم وَهْوَ فِي كِتَابِ اللَّهِ ‏{‏وَمَا آتَاكُمُ الرَّسُولُ فَخُذُوهُ‏}‏‏.‏
Reference : Sahih al-Bukhari 5931
In-book reference : Book 77, Hadith 146
USC-MSA web (English) reference : Vol. 7, Book 72, Hadith 815
  (deprecated numbering scheme)