Musannaf Ibn Abi Shaybah

It is narrated from Hazrat Ubaid bin Umair that when Allah Almighty intended to destroy the People of the Elephant, He sent upon them those birds which were brought out from the sea and they resembled swallows. Each of those birds was carrying three stones of white and black color. Two stones were in its feet and one stone was in its beak. The narrator says: Then those birds came until they formed rows over the heads of the People of the Elephant. Then they made a sound and threw the stones which were in their claws and beaks. No stone would fall on a man's head except that it would exit from his rear. And it would not strike any part of a man's body except that it would come out from the other side. The narrator says: Then Allah Almighty sent a strong wind which (also) struck with stones, so the intensity of the stones increased. The narrator says: Thus, all those people were destroyed.