Ar-Ra'd 13:28
ٱلَّذِينَ ءَامَنُوا۟ وَتَطْمَئِنُّ قُلُوبُهُم بِذِكْرِ ٱللَّهِ ۗ أَلَا بِذِكْرِ ٱللَّهِ تَطْمَئِنُّ ٱلْقُلُوبُ
Allatheena amanoo watatma-innuquloobuhum bithikri Allahi ala bithikriAllahi tatma-innu alquloob
"Those who have believed and whose hearts are assured by the remembrance of Allāh. Unquestionably, by the remembrance of Allāh hearts are assured.""
Ar-Ra'd 13:28, translation by Sahih International
A short reflection
Unquestionably, by the remembrance of Allah hearts are assured.