Dr. Mustafa Khattab, the Clear Quran - 33:9

Translation for 33:9

O believers! Remember Allah’s favour upon you when ˹enemy˺ forces came to ˹besiege˺ you ˹in Medina˺,1 so We sent against them a ˹bitter˺ wind and forces you could not see.2 And Allah is All-Seeing of what you do.

Foot notes

77179

 In 5 A.H./627 C.E., the Meccan pagans along with some Arab and Jewish tribes (totalling around 10 000 soldiers) laid a siege around Medina, where the Prophet (ﷺ) was positioned with 3000 soldiers. The Prophet (ﷺ) had anticipated the offence and, upon an advice from one of his companions, dug a trench around the city to protect it from invaders. After several unsuccessful attempts to cross the trench, the allied enemies quickly lost morale, and were forced to end the siege due to severe weather conditions. This encounter is commonly known as the Battle of the Trench or the Enemy Alliance.

77180

 The angels.