Yahya related to me that Abd ar-Rahman ibn Harmala al-Aslamisaid, "I saw Said ibn al-Musayyab with his nose bleeding and bloodpoured out of it so that his fingers were all red from the bloodcoming out of his nose, and he prayed without doing wudu."
USC-MSA web (English) reference: Book 2, Hadith 51
Arabic reference: Book 2, Hadith 81