Analysis of information sources in references of the Wikipedia article "Xwedodah" in English language version.
Quintus Curtius Rufus, in his History of Alexander (8.2.19; comp. mid-1st cent. CE), recounts the story of the Sogdian governor Sisimithres, who married his mother and had two sons with her, remarking that parents there were allowed to have indecent intercourse (stupro coire) with their children (II, pp. 252-53; cf. Boyce and Grenet, p. 8).