Sunan an-Nasa'i, Book 48, Hadith 16 (In-Book) ⓘ
It was narrated that 'Abdullah bin Mughaffal said: "The Messenger of Allah [SAW] forbade combing one's hair, except every other day."
أَخْبَرَنَا عَلِيُّ بْنُ حُجْرٍ، قَالَ حَدَّثَنَا عِيسَى بْنُ يُونُسَ، عَنْ هِشَامِ بْنِ حَسَّانَ، عَنِ الْحَسَنِ، عَنْ عَبْدِ اللَّهِ بْنِ مُغَفَّلٍ، قَالَ نَهَى رَسُولُ اللَّهِ صلى الله عليه وسلم عَنِ التَّرَجُّلِ إِلاَّ غِبًّا .
also referenced under: Hadith 5055 (Reference) & Volume 6, Book 48, Hadith 5058 (DarusSalam)