Genesis 38:13-14

13And it was told Tamar, saying, “Look, your father-in-law is going up to Timnah to shear his sheep.”

14So she took off her widow’s garments, covered herself with a veil and wrapped herself, and sat in an open place which was on the way to Timnah; for she saw that Shelah was grown, and she was not given to him as a wife.