And their Prophet (Samuel <><>) said to them: Verily! The sign of His Kingdom is that there shall come to you At-Tābūt (a wooden box), wherein is Sakinah[] (peace and reassurance) from your Lord and a remnant of that which Musā (Moses) and Hārūn (Aaron) left behind, carried by the angels. Verily, in this is a sign for you if you are indeed believers. (2:248)
Then Allāh did send down His Sakīnah (calmness, tranquillity and reassurance, etc.) on the Messenger (Muhammad SAW), and on the believers, and sent down forces (angels) which you saw not, and punished the disbelievers. Such is the recompense of disbelievers. (9:26)
If you help him (Muhammad SAW) not (it does not matter), for Allāh did indeed help him when the disbelievers drove him out, the second of two, when they (Muhammad SAW and Abu Bakr radhiallahu'anhu) were in the cave, and he (SAW) said to his companion (Abu Bakr radhiallahu'anhu): "Be not sad (or afraid), surely Allāh is with us." Then Allāh sent down His Sakīnah (calmness, tranquillity, peace, etc.) upon him, and strengthened him with forces (angels) which you saw not, and made the word of those who disbelieved the lowermost, while it was the Word of Allāh that became the uppermost, and Allāh is All-Mighty, All-Wise. (9:40)
He it is Who sent down As-Sakinah (calmness and tranquillity) into the hearts of the believers, that they may grow more in Faith along with their (present) Faith. And to Allāh belong the hosts of the heavens and the earth, and Allāh is Ever All-Knower, All-Wise. (48:4)
Indeed, Allāh was pleased with the believers when they gave their Bai'ā (pledge) to you (O Muhammad SAW) under the tree, He knew what was in their hearts, and He sent down As-Sakinah (calmness and tranquillity) upon them, and He rewarded them with a near victory, (48:18)
When those who disbelieve had put in their hearts pride and haughtiness the pride and haughtiness of the time of ignorance, then Allāh sent down His Sakinah (calmness and tranquillity) upon His Messenger ( SAW) and upon the believers, and made them stick to the word of piety (i.e. none has the right to be worshipped but Allāh), and they were well entitled to it and worthy of it. And Allāh is the All-Knower of everything. (48:26)
