The Book of Wisdom Chapter XVI
And he said (May Allah be pleased with him):
148. When you commit a sin (dhanb), let it not be a reason for your despairing of attaining righteousness (al-istiqaama) before your Lord, for that might be the last decreed for you.
149. If you want the door of hope opened for you, then consider what comes to you from Him; but if you want the door of sadness opened for you, then consider what goes to Him from you.
150. Sometimes He makes you learn in the night of contraction (layl al-qabd) what you have not learned in the radiance of the day of expansion (fi ishraaq nahaar al-basr). “You do not know which of them is nearer to you in benefit.” [Quran 4:11]
151. The hearts and the innermost centers of being are the places where light arises.
152. There is a light deposited in the hearts which is nourished by the Light coming from the treasuries of the invisible realms.
153. There is a light wherewith He unveils to you His created things (al-aathaar), and there is a Light wherewith He unveils to you His Attributes (awsaaf).
154. Sometimes hearts stop at lights the same way souls are veiled by the opacities of alterities (bi-kathaa’if al-aghyaar).
154. By way of honoring them, He veiled the lights of the innermost hearts (anwaar as-saraa’ir) with the opacities of exterior phenomena (bi-kathaa’if adh-dhawaahir) so they would not be abused when expressing themselves nor be accused of seeking renown.