Oehler’s proposal to read “vel invitis libris quod sententia flagitat τῶν δἰ ἀυτοῦ καὶ μετ᾽ αῦτὸν” does not seem necessary. αὐτῆς and αὐτὴν refer to οὐσία, the quotation being made (not verbally) from Eunomius, not from Theognostus, and following apparently the phrase about “preserving the relation,” etc. If the clause were a continuation of the quotation from Theognostus, we should have to follow Oehler’s proposal.