TSK · Genesis 38:8

"'You shall not uncover the nakedness of your brother's wife: it is your brother's nakedness.

If brothers dwell together, and one of them die, and have no son, the wife of the dead shall not be married outside to a stranger: her husband's brother shall go in to her, and take her to him as wife, and perform the duty of a husband's brother to her.

Naomi said, "Go back, my daughters. Why do you want to go with me? Do I still have sons in my womb, that they may be your husbands?

The near kinsman said, "I can't redeem it for myself, lest I mar my own inheritance. Take my right of redemption for yourself; for I can't redeem it."