Sayyiduna Salman (al-Farisi) (may Allah be pleased with him) said: "Give the family of Muhammad (peace and blessings be upon him) the place of the head in the body, and the place of the eye in the head, for the body is not guided except by the head, and the head is not guided except by the eyes."
Hadith Referenceالمعجم الكبير للطبراني / باب الحاء / 2627