Mukhtasar Bukhari

Narrated Abdullah bin Umar (may Allah be pleased with them): The Messenger of Allah (peace and blessings of Allah be upon him) took hold of my shoulder and said: "Live in this world as if you are a stranger or a wayfarer." And Ibn Umar (may Allah be pleased with them) used to say: "When you reach the morning, do not expect to reach the evening, and when you reach the evening, do not expect to reach the morning (and do whatever good deeds you can). Perhaps if the morning comes, the evening may not come." And prepare for illness during your health, and prepare for death during your life."