Muwatta Malik 153
موطأ مالك#153Da'ifYahya related to me from Malik that he had heard that the muadhdhin came to Umar ibn al-Khattab to call him to the subh prayer and found him sleeping, so he said, "Prayer is better than sleep," and Umar ordered him to put that in the adhan for subh
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Salim al-HilaliMauquf Daif
In-book reference: 3:8