Sunan Ibn Majah, Hadith 3498 ⓘ
It was narrated from Abu Hurairah that the Prophet said: “Whoever applies kohl, let him do it an odd number of times. Whoever does that has done well, and whoever does not, it does not matter.”
حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ عُمَرَ، حَدَّثَنَا عَبْدُ الْمَلِكِ بْنُ الصَّبَّاحِ، عَنْ ثَوْرِ بْنِ يَزِيدَ، عَنْ حُصَيْنٍ الْحِمْيَرِيِّ، عَنْ أَبِي سَعْدِ الْخَيْرِ، عَنْ أَبِي هُرَيْرَةَ، أَنَّ النَّبِيَّ ـ صلى الله عليه وسلم ـ قَالَ " مَنِ اكْتَحَلَ فَلْيُوتِرْ مَنْ فَعَلَ فَقَدْ أَحْسَنَ وَمَنْ لاَ فَلاَ حَرَجَ " .
also referenced under: Book 31, Hadith 3627 (In-Book) & Volume 4, Book 31, Hadith 3498 (DarusSalam)