Note 134 — Chapter III · CATEGORIÆ.
Reading edition
Prantl, Geschichte der Logik, vol. i. pp. 428, 429; Simplikius ad Categor. fol. 43, A: κἀκεῖνο ἄτοπον τὸ σύνθετα ποιεῖν τὰ γένη ἐκ προτέρων τινῶν καὶ δευτέρων ὡς τὸ πρός τι ἐκ ποιοῦ καὶ πρός τι. Cf. Plotinus, Ennead. vi. 1, 25-29.
Porphyry appears to include all συμβεβηκότα under ποιὸν and πὼς ἔχον: he gives as examples of the latter, what Aristotle would have assigned to the Category κεῖσθαι (Eisagoge, cc. 2, 10; Schol. Br. p. 1, b. 32, p. 5, a. 30).