Kitab-i-Iqan — Paragraph 287
Source (Persian)
وَ اَختِمُ القَولَ بقَولِه تعالی: "وَ مَنْ يَعْشُ عن ذِکْرِ الرَّحمَنِ نُقَيِّضْ لَهُ شَيطَاناً فَهُوَ لَهُ قَرينٌ." " وَ مَنْ اَعرَضَ عَنْ ذِکْرِی فإنَّ لَهُ مَعِيشَةً ضَنْکاً."
Translation
We conclude Our argument with His words—exalted is He—“And whoso shall withdraw from the remembrance of the Merciful, We will chain a Satan unto him, and he shall be his fast companion.” “And whoso turneth away from My remembrance, truly his shall be a life of misery.”