أَخْبَرَنَا أَبُو نُعَيْمٍ ، حَدَّثَنَا عَبْدُ الرَّحْمَنِ بْنُ النُّعْمَانِ أَبُو النُّعْمَانِ الْأَنْصَارِيُّ ، حَدَّثَنِي أَبِي ، عَنْ جَدِّي ، وَكَانَ جَدِّي قَدْ أُتِيَ بِهِ النَّبِيُّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَمَسَحَ عَلَى رَأْسِهِ، وَقَالَ :" لَا تَكْتَحِلْ بِالنَّهَارِ وَأَنْتَ صَائِمٌ، اكْتَحِلْ لَيْلًا، بِالْإِثْمِدِ، فَإِنَّهُ يَجْلُو الْبَصَرَ وَيُنْبِتُ الشَّعَرَ ".
قَالَ أَبُو مُحَمَّد : لَا أَرَى بِالْكُحْلِ بَأْسًا

Abu Nu`aym told us, Abd al-Rahman bin al-Nu`man Abu al-Nu`man al-Ansari told us, my father told me, on the authority of my grandfather, and my grandfather had come With it, the Prophet, may God’s prayers and peace be upon him, wiped his head and said: “Do not use kohl during the day while you are fasting. Use kohl at night, with antimony. He sharpens sight and makes hair grow.”
Abu Muhammad said: I do not see anything wrong with using kohl.