For to the Romans who had remained with them in the city, as I have stated above, they had decided to dispense nothing at all from the time when their enemy began the siege; and so these men at first resorted to unaccustomed foods and laid hold on every forbidden thing, and at the last they even tasted each other’s blood.
Edition :
Procopius: De Bellis; in: Procopius. History of the Wars, Volume I-V. ed. and transl. H. B. Dewing, Loeb Classical Library, Cambridge, MA: Harvard University Press, 1914-1928.