543
Musnad AhmedAl-Hasan mentioned "Uthman"s extreme shyness and said:
If he was in a room with the door closed, and he took off his garment to pour water on himself, shyness prevented him from standing up straight.
Reference: Musnad Ahmad 543
Arabic/English book : Book 4, Hadith 543
Arabic/English book : Book 4, Hadith 543