Leviticus 21:9

כי תחל לזנות means, if she profanes herself through unchastity, i. e. that a marriage-tie of some kind applied to her and she nevertheless prostituted herself either after betrothal (which constituted a kind of marriage-tie, since she would require a bill of divorce to enable her to marry someone else) or after marriage (having left her father's house for her husband’s). Our Rabbis are of different opinions regarding this (whether Scripture speaks here of an ארוסה or a נשואה), but all agree that Scripture is not speaking of a פנויה (a woman who is neither betrothed nor married) (cf. Sanhedrin 51b). את אביה היא מחללת SHE PROFANETH HER FATHER — i. e. she profanes and makes light of his honor by her conduct (מחללת does not mean she causes him to become a חלל, one unfit for priestly service), in that people say about him, "Cursed be he who has engendered this woman; — cursed be he who has reared this woman” (Sanhedrin 52a).

וּבַת֙ אִ֣ישׁ כֹּהֵ֔ן כִּ֥י תֵחֵ֖ל לִזְנ֑וֹת אֶת־אָבִ֙יהָ֙ הִ֣יא מְחַלֶּ֔לֶת בָּאֵ֖שׁ תִּשָּׂרֵֽף׃ {ס}        

And the daughter of any priest, if she profane herself by playing the harlot, she profanes her father: she shall be burnt with fire.