Shofetim 11:37-39

Orthodox Jewish Bible

³⁷ She said unto her av, Let this thing be done for me; let me alone two chodashim, that I may go up and down upon the hills, and bewail betulai (my virginity), I and my friends.

³⁸ And he said, Go. And he sent her away for two chodashim; and she went with her companions, and bewailed her betulim (virginity) upon the hills.

³⁹ And it came to pass at the end of two chodashim, that she returned unto her av, who did with her according to his neder which he had vowed; and she knew no man. And it was a chok in Yisroel,