Muwatta Malik, Book 20, Hadith 721 (In-Book)

Yahya related to me from Malik from Yahya ibn Said that al-Qasim ibn Muhammad said that al-Furafisa ibn Umayr al-Hanafi saw Uthman ibn Affan at al-Arj, and he was covering his face while in ihram.

حَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ يَحْيَى بْنِ سَعِيدٍ، عَنِ الْقَاسِمِ بْنِ مُحَمَّدٍ، أَنَّهُ قَالَ أَخْبَرَنِي الْفُرَافِصَةُ بْنُ عُمَيْرٍ الْحَنَفِيُّ، أَنَّهُ رَأَى عُثْمَانَ بْنَ عَفَّانَ بِالْعَرْجِ يُغَطِّي وَجْهَهُ وَهُوَ مُحْرِمٌ ‏.‏

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also referenced under: Book 20, Hadith 13 (USC-MSA)