Musnad Ahmad
Musnad Ahmad 538
Arabic hadith text
حَدَّثَنَا وَكِيعٌ، حَدَّثَتْنِي أُمُّ غُرَابٍ، عَنْ بُنَانَةَ، قَالَتْ مَا خَضَبَ عُثْمَانُ قَطُّ.
Translation
Umm Ghurab narrated that Bunanah said
’Uthman never dyed his hair.