Sunan an-Nasa'i
Book 24: The Book of Hajj
كتاب مناسك الحج
467 hadith in this book
Chapter 45 Kohl for one in Ihram
باب الْكُحْلِ لِلْمُحْرِمِ .
It was narrated from Abn bin 'Uthman that his father said: 'the messenger of Allah said concerning a Muhrim whose head or yes hurt: 'Let him smudge them with aloes, (sahih):
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا سُفْيَانُ، عَنْ أَيُّوبَ بْنِ مُوسَى، عَنْ نُبَيْهِ بْنِ وَهْبٍ، عَنْ أَبَانَ بْنِ عُثْمَانَ، عَنْ أَبِيهِ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم فِي الْمُحْرِمِ " إِذَا اشْتَكَى رَأْسَهُ وَعَيْنَيْهِ أَنْ يُضَمِّدَهُمَا بِصَبِرٍ " .
Hadith text, translations and grading are courtesy of Sunnah.com.