Al Fath Ayah 4

هُوَ ٱلَّذِىٓ أَنزَلَ ٱلسَّكِينَةَ فِى قُلُوبِ ٱلْمُؤْمِنِينَ لِيَزْدَادُوٓاْ إِيمَـٰنًا مَّعَ إِيمَـٰنِهِمْ‌ۗ وَلِلَّهِ جُنُودُ ٱلسَّمَـٰوَٲتِ وَٱلْأَرْضِ‌ۚ وَكَانَ ٱللَّهُ عَلِيمًا حَكِيمًا ٤ He is the One Who sent down serenity upon the hearts of the believers so that they may increase even more in their faith. To Allah ?alone? belong the forces of the heavens and the earth. And Allah is All-Knowing, All-Wise.