It wasnarrated from Abu Hurairah that the Prophet (ﷺ) said:
"Whoeverapplies kohl, let him do it an odd number of times. Whoeverdoes thathas done well, and whoever does not, it does not matter." (JA)
English reference (JA): Vol. 4, Book 31, Hadith 3498 (JA)
Arabic reference (JA): Book 31, Hadith 3627 (JA)