The Tranquillity, Peace
هُوَ الَّذِي أَنْزَلَ السَّكِينَةَ فِي قُلُوبِ الْمُؤْمِنِينَ لِيَزْدَادُوا إِيمَانًا مَعَ إِيمَانِهِمْ ۗ وَلِلَّهِ جُنُودُ السَّمَاوَاتِ وَالْأَرْضِ ۚ وَكَانَ اللَّهُ عَلِيمًا حَكِيمًا {4}
He is the One Who Sent down ‘السَّكِينَةَ’ the tranquillity into the hearts of the Momineen in order to increase Eman along with their Eman, and for Allah are the armies of the skies and the earth, and Allah was always Knowing, Wise [48:4]
و عنه: عن علي بن إبراهيم، عن أبيه، عن ابن أبي عمير، عن حفص بن البختري و هشام بن سالم و غيرهما، عن أبي عبد الله (عليه السلام)، في قوله الله عز و جل: هُوَ الَّذِي أَنْزَلَ السَّكِينَةَ فِي قُلُوبِ الْمُؤْمِنِينَ، قال: «هو الإيمان
And from him, from Ali Bin Ibrahim, from his father, from Ibn Abu Umeyr, from Hafs Bin Al-Bakhtary and Hisham Bin Saalim and someone else,
Abu Abdullah-asws regarding the Words of Allah-azwj Mighty and Majestic: He is the One Who Sent down the tranquillity into the hearts of the Momineen [48:4], he-asws said: ‘It is the Eman’.[1]
[1] الكافي 2: 13/ 4