Qur'an 9:26

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

“Then Allāh sent down His tranquility upon His Messenger and upon the believers and sent down soldiers [i.e., angels] whom you did not see and punished those who disbelieved. And that is the recompense of the disbelievers.”

At-Tawba 9:26 · Saheeh International