Musnad Abu Ya'la al-Mawsili 138:8

Sufyan ibn Waki' ibn al-Jarrah narrated to us, my father narrated to us, from my grandfather, from Qays ibn Wahb al-Hamdani, from Anas ibn Malik, who said: The people most bold in questioning the Messenger of Allah (may Allah bless him and grant him peace) were the Bedouins. A Bedouin came to him and said, "O Messenger of Allah, when is the Hour?" He did not answer him until he came to the mosque and prayed, and he made the prayer light. Then he turned to the Bedouin and said, "Where is the one who asked about the Hour?" And Sa'd passed by, so the Messenger of Allah (may Allah bless him and grant him peace) said, "Indeed, this one will live until his life is consumed; there will not remain among you an eye that blinks."