Yahya related to me from Malik that he had heard that themuadhdhin came to Umar ibn al-Khattab to call him to the subh prayerand found him sleeping, so he said, "Prayer is better than sleep," andUmar ordered him to put that in the adhan for subh . (RU)
App reference (RU): Book 3, Hadith 8 (RU)
USC-MSA web (English) reference: Book 3, Hadith 8 (RU)
Arabic reference (RU): Book 3, Hadith 154 (RU)