Athenaios von Naukratis XI. Buch (465E-466A):

According to the author of the Thebaid [fr. 2], which is part of the epic cycle, Oedipus cursed his sons on account of some drinking vessels, because they set a vessel beside him that he had forbidden them to use. The poet puts it as follows:

But the divinely-sired hero, blond Polynices,
first placed a beautiful silver table which had belonged
to reverent Cadmus beside Oedipus, and then
filled a fine gold goblet with delicious wine.
But when (Oedipus) noticed his father’s precious
possession set beside him, tremendous grief invaded his heart,
and immediately he called down fearsome curses
on both his sons – nor did the swift Fury ignore him –
asking that they not divide their inheritance in gentle
friendship, but both have endless wars and battles.

[Athenaeus, The Learned Banqueters. Vol. 5. Ed. by S. Douglas Olson. Cambridge (Mass.)/London 2009, p. 235]

Neben Homers Odyssee XI 271-280, Hesiods Erga 161-163 und Aischylos‘ Sieben gegen Theben 772-791 läßt sich daraus die Annahme ableiten, daß Ödipus in der Tradition vor Sophokles nach der Aufdeckung von Vatermord und Mutterehe noch weiter in Theben regiert hat.