Abdullah bin Mas'ud radiallahu anhu said: "Indeed I hate to see a man idle, neither working for this world nor for the Hereafter."
Hasan Basri radiallahu anhu said: "O son of Adam, indeed you are only but a number of days. Whenever a day passes, a part of you leave with it."
Hassan said: "I have met (pious) people who are more miserly with their time than they are with their wealth."
Hassan also said in a sermon, "Do not let the temporary and little charms of this world distract you and entice you...and do not say tomorrow and tomorrow, for indeed you do not know when you will be heading to Allah."