At-Tawbah 9:40 الا تنصروه فقد نصره الله اذ اخرجه الذين كفروا ثاني اثنين اذ هما في الغار اذ يقول لصاحبه لا تحزن ان الله معنا فانزل الله سكينته عليه وايده بجنود لم تروها وجعل كلمة الذين كفروا السفلى وكلمة الله هي العليا والله عزيز حكيم ٤٠

If you help him (Muhammad صلى الله عليه وسلم) not (it does not matter), for Allâh did indeed help him when the disbelievers drove him out, the second of the two; when they (Muhammad صلى الله عليه وسلم and Abu Bakr رضي الله عنه) were in the cave, he (صلى الله عليه وسلم) said to his companion (Abu Bakr رضي الله عنه): "Be not sad (or afraid), surely Allâh is with us." Then Allâh sent down His Sakînah (calmness, tranquillity, peace) upon him, and strengthened him with forces (angels) which you saw not, and made the word of those who disbelieved the lowermost, while the Word of Allâh that became the uppermost; and Allâh is All-Mighty, All-Wise.