هُوَ الَّذِيْٓ اَنْزَلَ السَّكِيْنَةَ فِيْ قُلُوْبِ الْمُؤْمِنِيْنَ لِيَزْدَادُوْٓا اِيْمَانًا مَّعَ اِيْمَانِهِمْ ۗ وَلِلّٰهِ جُنُوْدُ السَّمٰوٰتِ وَالْاَرْضِۗ وَكَانَ اللّٰهُ عَلِيْمًا حَكِيْمًاۙ ( الفتح: ٤ )
Huwal lazeee anzalas sakeenata fee quloobil mu'mineena liyazdaadooo eemaanamma'a eemaanihim; wa lillaahi junoodus samawaati wal ard; wa kaanal laahu 'Aleeman Hakeemaa (al-Fatḥ 48:4)
Sahih International:
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 Allah belong the soldiers of the heavens and the earth, and ever is Allah Knowing and Wise. (Al-Fath [48] : 4)
1 Mufti Taqi Usmani
He (Allah) is such that He sent down tranquility into the hearts of the believers, so that they grow more in faith in addition to their (existing) faith- And to Allah belong the forces of the heavens and the earth, and Allah is All-Knowing, All-Wise-