Musnad Abu Ya'la al-Mawsili 243:88

And through the same chain from Abu Musa, he said: The Messenger of Allah (ﷺ) said: "Indeed, the Ash'ariyyin, when they run out of provisions during a military expedition, or when the food of their families in Medina becomes scarce, they gather what they have into one garment. Then they divide it among themselves in one vessel equally; they are of me, and I am of them."