Musannaf Ibn Abi Shayba 33:573

Muhammad ibn Fudayl narrated to us, from ‘Ata’ ibn al-Sa’ib, from Abu ‘Abd al-Rahman, who said: Hudhayfah stood in al-Mada’in and delivered a sermon. He praised Allah and extolled Him, then said: "The Hour has drawn near, and the moon has split. Behold, the Hour has indeed drawn near, and the moon has indeed split. Behold, the world has announced its departure. Behold, today is the training ground, and tomorrow is the race. The destination is the Fire, and the winner is he who races toward Paradise."