Hasan al-Basri (radi Allahu ta'ala anhu) said:

"Every morning there is a shout: O son of Adam, this is a new day, and
it is a witness over your actions.  O son of Adam, you're just days.
Everytime a day goes, a portion of you goes.  By Allah, I met a people
who were more vigilant over how they spent their time than you are over
your dinars and dirhams."

Imam Ghazali woke up one early morning and as usual offered his prayers
and then enquired what day it was, his younger brother, Ahmad Ghazali
replied,"Monday." He asked him to bring his white shroud, kissed it,
stretched himself full length and saying  "Lord, I obey willingly,"
breathed his last.

And underneath his head rest they found the following verses;
composed by him, probably, during the night.

 "Say to my friends, when they look upon me, dead
 Weeping for me and mourning me in sorrow
 Do not believe that this corpse you see is myself
 In the name of God, I tell you, it is not I,
 I am a spirit, and this is naught but flesh
 It was my abode and my garment for a time.
 I am a treasure, by a talisman kept hid,
 Fashioned of dust, which served me as a shrine,
 I am a pearl, which has left it's shell deserted,
 I am a bird, and this body was my cage
 Whence I have now floron forth and it is left as a token
 Praise to God, who hath now set me free
 And prepared for me my place in the highest of the heaven,
 Until today I was dead, though alive in your midst.
 Now I live in truth, with the grave - clothes discarded.
 Today I hold converse with the saints above,
 With no veil between, I see God face to face.
 I look upon "Loh-i-Mahfuz" and there in I read
 Whatever was and is and all that is to be.
 Let my house fall in ruins, lay my cage in the ground,
 Cast away the talisman, it is a token, no more
 Lay aside my cloak, it was but my outer garment.
 Place them all in the grave, let them be forgotten,
 I have passed on my way and you are left behind
 Your place of abode was no deweling place for me.
 Think not that death is death, nay, it is life,
 A life that surpasses all we could dream of here,
 While in this world, here we are granted sleep,
 Death is but sleep, sleep that shall be prolonged
 Be not frightened when death draweth night,
 It is but the departure for this blessed home
 Think of the mercy and love of your Lord,
 Give thanks for His Grace and come without fear.
 What I am now, even so shall you be
 For I know that you are even as I am
 The souls of all men come forth from God
 The bodies of all are compounded alike
 Good and evil, alike it was ours
 I give you now a message of good cheer
 May God's peace and joy for evermore be yours."