[1] The first part of this sentence, as far as e)pa/gein, is incorporated in alpha 932 (akos): Aelian fr. 76f Domingo-Forasté. The whole sentence, with the vital addition of 'to the Athenians' at the start, is part of chi 504 (chresmos): Aelian fr. 76g Domingo-Forasté. Those versions crucially add the adverb 'unjustly' (e)kdi/kws) before 'deceased'; see also epsilon 400.
[2] Sophocles, Oedipus at Colonus 469–73, with variants (TLG, using the Budé text of Dain and Mazon, has i(ra\s, a)eiru/tou, qi/gwn), word order (tou=to xeu=m’, laba\s a)mfisto/mous Budé), and errors (kra=t’ e)/reyon Budé). Translation by Jebb (Perseus); 'drink-offerings' translates xoa\s. The third line is spoken by Oedipus, the rest by the chorus.
The present headword, like its opening glosses, is accusative plural (xoa/s, etc.), but has been made nominative for the translation. The oxytone form used four times here is the accusative plural of xoh/ (1st declension feminine) 'a pouring', not of xou=s (2nd declension masculine or feminine; it has the paroxytone accusative plural xo/as) or its variant xoeu/s (3rd declension masculine; perispomenon accusative plural xoa=s); these two refer to a vessel or its capacity, and in the third declension form provides the usual name for the Attic celebration of Choës (*Xo/es), the second day of the Anthesteria (chi 369, chi 370). However, xoai/ is used in the second sentence here for the name of the Athenian festival.
The "backbone" of the present entry (with other material interpolated) is the scholia to Aristophanes, Acharnians 961, where *xoa=s occurs.