In The Name of Allaah, The Most Merciful, The Bestower of Mercy.
Some of the wise people said, “The days are three types: Yesterday is like a moral lesson, so it remains as an admonition and a lesson for you. Today is like a friend who gives you [good] advice. You did not approach it, rather it came to you. It was hidden from you for a prolonged period and will depart quickly, so get hold of it [by doing good]. As for Tomorrow, you do not know what Allaah has decreed, whether you’ll be from its people or not”.
Bahjatul Majaalis 3/330. By Ibn Abdil Barr [rahimahullaah]