Ar Ra'd, 28 Ayah
13:28
ٱلَّذِينَ ءَامَنُواْ وَتَطۡمَئِنُّ قُلُوبُهُم بِذِكۡرِ ٱللَّهِۗ أَلَا بِذِكۡرِ ٱللَّهِ تَطۡمَئِنُّ ٱلۡقُلُوبُ ٢٨
Al-Ladhīna 'Āmanū Wa Taţma'innu Qulūbuhum Bidhikri Al-Lahi ۗ 'Alā Bidhikri Al-Lahi Taţma'innu Al-Qulūbu
Those who have believed and whose hearts are assured by the remembrance of Allah . Unquestionably, by the remembrance of Allah hearts are assured."