Yahya related to me from Malik from Zayd ibn Aslam that Umar ibnal-Khattab used to say, "O Allah! Do not let me be slain by the handof a man who has prayed a single prostration to You with which he willdispute with me before You on the Day of Rising!" (IT)
USC-MSA web (English) reference: Book 21, Hadith 30 (IT)
Arabic reference (IT): Book 21, Hadith 991 (IT)