Sahih Muslim 2888
The Book of Pilgrimage
وَحَدَّثَنَاهُ إِسْحَاقُ بْنُ إِبْرَاهِيمَ الْحَنْظَلِيُّ، حَدَّثَنَا عَبْدُ الصَّمَدِ بْنُ عَبْدِ الْوَارِثِ، حَدَّثَنِي أَبِي، حَدَّثَنَا أَيُّوبُ بْنُ مُوسَى، حَدَّثَنِي نُبَيْهُ بْنُ وَهْبٍ، أَنَّ عُمَرَ بْنَ عُبَيْدِ اللَّهِ بْنِ مَعْمَرٍ، رَمِدَتْ عَيْنُهُ فَأَرَادَ أَنْ يَكْحُلَهَا، فَنَهَاهُ أَبَانُ بْنُ عُثْمَانَ وَأَمَرَهُ أَنْ يُضَمِّدَهَا بِالصَّبِرِ وَحَدَّثَ عَنْ عُثْمَانَ بْنِ عَفَّانَ عَنِ النَّبِيِّ صلى الله عليه وسلم أَنَّهُ فَعَلَ ذَلِكَ .
Nubaih b Wahb reported that the eyes of Umar b. Ubaidnllah b. Ma'mar were swollen, and he decided to use antimony. Aban b. 'Uthman forbade him to do so and commanded him to apply aloes on them, and reported on the authority of 'Uthman b. Affan that the Messenger of Allah (ﷺ) had done that
Text from the public-domain hadith-api dataset. Numbering follows that dataset and can differ by a few from some printed editions — check the wording, not only the number.