Judges 11:39

And it came to pass at the end of the two months that she returned to her father; and he performed upon her his vow which he vowed; and she knew no man:

And it came to pass at the end of two months, that she returned unto her father, who did with her according to his vow which he had vowed: and she knew no man. And it was a custom in Israel,

At the end of two months, she returned to her father, who did with her according to his vow which he had vowed. She was a virgin. It became a custom in Israel