Surah Ar-Ra'd (13:28)

ٱلَّذِينَ ءَامَنُوا۟ وَتَطْمَئِنُّ قُلُوبُهُم بِذِكْرِ ٱللَّهِ أَلَا بِذِكْرِ ٱللَّهِ تَطْمَئِنُّ ٱلْقُلُوبُ

Those who have trusted, and whose hearts grow inwardly settled by the remembrance of Allah. Indeed—by the remembrance of Allah hearts grow inwardly settled.

Roots in this verse: ا م ن (Amn), ط م ن (Tmn), ق ل ب (qlb), ذ ك ر (*kr), ا ل ه (Alh)