The Messenger of Allah ﷺ used to apply ithmid kohl to his eyes, three strokes to the right eye and two to the left.
كان رسول الله ﷺ يكتحل بالإثمد، و يكتحل اليمنى ثلاث قراود، واليسرى قرودين.
Ibn Abu Shayba (23953) narrated it from Isa bin Yunus, from Abdul-Hameed bin Jafar, from Imran bin Abu Anas, who mentioned it. This is a mursal narration. Abu Shaykh connected it in Akhlaq an-Nabi ﷺ (p. 147) through another route from Abdul-Hameed bin Jafar, from Imran bin Abu Anas, from Anas, who mentioned something similar, except that he made it three for each eye, whereas the correct version is what appears in the Musannaf.Its chain is hasan, on account of Abdul-Hameed bin Jafar al-Ansari, whom some scholars criticized, but Ibn Main declared him trustworthy, and Abu Hatim said, "He is truthful in his standing," so someone like him has his hadith graded hasan so long as it does not contradict an established ruling and does not contain anything objectionable.