Imam Malik (may Allah have mercy on him) said that it reached him that Sayyidah Umm Salamah (may Allah be pleased with her), the wife of the Prophet (peace and blessings be upon him), said to a woman who was mourning her husband, whose eyes were ailing and it had become severe for her: "Apply kohl al-jala' at night and wipe it off during the day."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب العدد / 15536
Malik (may Allah have mercy on him) said that the Messenger of Allah (peace and blessings be upon him) came in to Umm Salamah (may Allah be pleased with her) while she was mourning Abu Salamah (may Allah be pleased with him), and she had applied (sabir, aloe) to her eyes. The Messenger of Allah (peace and blessings be upon him) said: "O Umm Salamah, what is this?" She said: O Messenger of Allah, it is only sabir. The Messenger of Allah (peace and blessings be upon him) said: "Apply it at night and wipe it off during the day."
These two (reports) are munqati' (with a broken chain), and they have been narrated with a connected chain.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب العدد / 15537
Al-Mughirah bin al-Dahhak (may Allah have mercy on him) said: Umm Hakim bint Asid informed me from her mother that her husband died and her eyes were ailing, so she applied kohl al-jala'. Ahmad (may Allah have mercy on him) said: The correct form is kohl al-jala'. She sent a freed slave woman of hers to Umm Salamah (may Allah be pleased with her) and asked her about kohl al-jala'. She said: She should not apply it except in a matter of absolute necessity; then she may apply it at night and wipe it off during the day. Then she said: The Messenger of Allah (peace and blessings be upon him) came to me when Abu Salamah (may Allah be pleased with him) died, and I had applied sabir (aloe) to my eyes. He (peace and blessings be upon him) said: "O Umm Salamah, what is this?" I said: O Messenger of Allah (peace and blessings be upon him), it is only sabir; there is no perfume in it. He (peace and blessings be upon him) said: "It brightens the face, so apply it at night and remove it during the day, and do not comb your hair with perfume or with henna, for it is a dye." She said: O Messenger of Allah (peace and blessings be upon him), with what shall I comb my hair? The Messenger of Allah (peace and blessings be upon him) said: "With lote-tree leaves (sidr); cover your head with it."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب العدد / 15538