Scholarly opinion has been divided over the interpretation of τοîς ἀπò χρησμῶν τι ἰσχυρισμένοις μóνον δὴ τοῦτο ἐχυρῶς ξυμβáν at Thucydides 5.26.3. On one hand, Dover and others maintain that Thucydides emphasizes the oracle's fulfilment, and adopt a somewhat neutral definition for ἰσχυρισαμένοις (‘venture to affirm’), while Marinatos argues that ‘By ἰσχυρισαμένοις Thucydides is diverting attention away from the oracle and instead focusing on those who made claims based on it.’ This paper studies the interpretations of ἰσχυρισαμένοις and will suggest a more precise understanding of the word.