Commentaire sur Ruth 3:6

So she went down to the threshing floor and she did. She [Naomi] said to her, “Bathe and scent yourself, dress yourself in the finest garb,” and afterwards, “and go down to the threshing floor.” But she [Rus] did not do so, but [instead] she said, “If I go down when I am dressed up, whoever meets me or sees me will think that I am a harlot.” She therefore first went down to the threshing floor and afterwards adorned herself, as her mother-in-law had instructed.⁴Maseches Shabbos 113b.