Ibn 'Abbas narrated that the Messenger of Allah (s.a.w) said:
"Indeed the best of what you treat is As-Sa'ut, Al-Ladud, cupping and laxatives.' And the best of what you use for Kuhl is Ithmid, for it clears the vision and grows the hair (eye-lashes)." And he said:" The Messenger of Allah (s.a.w) had a Kuhl holder with which he would apply Kuhl before sleeping three in each eye." (DE)
English reference (DE): Vol. 4, Book 2, Hadith 2048 (DE)
Arabic reference (DE): Book 28, Hadith 2185 (DE)