Sura al-Tawbah 9:26

ثُمَّ أَنزَلَ ٱللَّـهُ سَكِينَتَهُۥ عَلَىٰ رَسُولِهِۦ وَعَلَى ٱلْمُؤْمِنِينَ وَأَنزَلَ جُنُودًا لَّمْ تَرَوْهَا وَعَذَّبَ ٱلَّذِينَ كَفَرُوا۟ وَذَٰلِكَ جَزَآءُ ٱلْكَٰفِرِينَ

thumma anzala allāhu sakīnatahu ʿalā rasūlihi wa-ʿala l-muʾminīna wa-anzala junūdan lam tarawhā wa-ʿadhdhaba lladhīna kafarū wa-dhālika jazāʾu l-kāfirīna

But Allah did pour His calm on the Messenger and on the Believers, and sent down forces which ye saw not: He punished the Unbelievers; thus doth He reward those without Faith.