Yahya related to me from Malik from Nafi from Abdullah ibn Umarthat Umar ibn al-Khattab was washed and shrouded and prayed over, yethe was a martyr, may Allah have mercy on him . (ES)
USC-MSA web (English) reference: Book 21, Hadith 36 (ES)
Arabic reference (ES): Book 21, Hadith 997 (ES)