Yahya related to me from Malik from Zayd Aslam from Ata ibn Yasarfrom Abdullah Abbas that the Messenger of Allah, may Allah bless himand grant him peace, ate a shoulder of lamb and then prayed withoutdoing wudu. (IT)
USC-MSA web (English) reference: Book 2, Hadith 19 (IT)
Arabic reference (IT): Book 2, Hadith 49 (IT)