Musnad Ahmad 1153:583

Hashim narrated to us, he said: Ishaq bin Sa'id—meaning Ibn 'Amr bin Sa'id bin al-'As—narrated to us, from his father, from 'Aishah, she said: The Messenger of Allah (ﷺ) entered upon me while he was saying: "O 'Aishah, your people are the quickest of my nation to join me." She said: When he sat down, I said: O Messenger of Allah, may Allah make me a ransom for you, you entered while you were saying words that frightened me. He said: "And what is it?" She said: You claim that my people are the quickest of your nation to join you. He said: "Yes." She said: And why is that? He said: "Death will be made sweet for them, and their nation will be stingy toward them." She said: So I said: Then how will the people be after that, or at that time? He said: "Like locusts (daba), the strong among them will eat the weak among them, until the Hour is established upon them." And the *daba* are the locusts that have not yet grown their wings.