Musannaf Ibn Abi Shayba 33:1360

Zayd ibn al-Hubab narrated to us, he said: Abu Sinan informed us, he said: ‘Amr ibn Murrah narrated to us, he said: Abu Wa’il came to visit al-Rabi’ ibn Khuthaym and said: "I did not come to you except that I heard the voice of the announcer of death." Al-Rabi’ said: "I am only [waiting] for a month in which fifty and one hundred prayers are written for me."