Sunan Ibn Majah
3498
Daif+3

It was narrated from Abu Hurairah that the Prophet (ﷺ) 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.”

DaifAl-Albani
DaifMuhammad Fouad Abd al-Baqi