Nahjul Balagha Letter 72

To Abdullah bin Abbas

Now, you cannot go farther than the limit of your life, nor can you be given a livelihood which is not for you. Remember this life consists of two days- a day for you and a day against you, and that the world is a house of (changing) authorities. Whateverin it is for you will come to you despite your weakness; and whatever in it turns against you cannot be brought back despite your strength.