The calm that is sent down
Named as something placed into hearts, not produced by them.
هُوَ ٱلَّذِىٓ أَنزَلَ ٱلسَّكِينَةَ فِى قُلُوبِ ٱلْمُؤْمِنِينَ لِيَزْدَادُوٓا۟ إِيمَـٰنًا مَّعَ إِيمَـٰنِهِمْ ۗ وَلِلَّهِ جُنُودُ ٱلسَّمَـٰوَٰتِ وَٱلْأَرْضِ ۚ وَكَانَ ٱللَّهُ عَلِيمًا حَكِيمًا
Huwa-lladhī anzala-s-sakīnata fī qulūbi-l-mu'minīna li-yazdādū īmānan maʿa īmānihim…
“It is He who sent down tranquility into the hearts of the believers that they would increase in faith along with their [present] faith. And to Allāh belong the soldiers of the heavens and the earth, and ever is Allāh Knowing and Wise.”
Source
The Qur'an · 48:4
Qur'an
- Qur'anic text in the Uthmani script via Quran.com; translation: Saheeh International