Al-Hasan Al-Basri said:
I have met people for whom time was more precious to them than how preciously you people covet coins of gold and silver.
And Al-Hasan Al-Basri, may Allah have mercy on him, also said:
There is not a day that the sun rises upon except that it calls out, ‘O Son of Adam, I am today: a new creation and your actions I am witnessing. Use me wisely for I shall never return to you until the Day of Judgement.‘