Holy Quran » AR RA'D : 28

13 : 28

الَّذِينَ آمَنُواْ وَتَطْمَئِنُّ قُلُوبُهُم بِذِكْرِ اللّهِ أَلاَ بِذِكْرِ اللّهِ تَطْمَئِنُّ الْقُلُوبُ

Those who have believed and whose hearts are assured by the remembrance of Allah . Unquestionably, by the remembrance of Allah hearts are assured."

Tafseer

{ الذين آمنوا وتطمئن } تسكن { قلوبهم بذكر الله } أي وعده { ألا بذكر الله تطمئن القلوب } أي قلوب المؤمنين .

Who believe and whose hearts inhabit the remembrance of Allah any promise not to mention God do hearts any hearts of the faithful.