Sunan an-Nasa'i, Volume 6, Book 48, Hadith 5115 (DarusSalam) ⓘ
It was narrated that Abu Raihanah said: "We heard that the Messenger of Allah [SAW] forbade filing (the teeth) and tattoos."
حَدَّثَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنْ يَزِيدَ بْنِ أَبِي حَبِيبٍ، عَنْ أَبِي الْحُصَيْنِ الْحِمْيَرِيِّ، عَنْ أَبِي رَيْحَانَةَ، قَالَ بَلَغَنَا أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى عَنِ الْوَشْرِ وَالْوَشْمِ .
also referenced under: Hadith 5112 (Reference) & Book 48, Hadith 73 (In-Book)