Derasha 1 on Acharei Mos 18:15

Parashas Acharei Mos · Passuk 18:15

The Complete Passuk

עֶרְוַ֥ת כַּלָּֽתְךָ֖ לֹ֣א תְגַלֵּ֑ה אֵ֤שֶׁת בִּנְךָ֙ הִ֔וא לֹ֥א תְגַלֶּ֖ה עֶרְוָתָֽהּ׃

Torah Temima points to Yevamos 21b.

Core Text — Yevamos 21b

ערות כלתך — כלתך ולא כלת בנך.

English: “Your daughter-in-law” — your own, not your son’s daughter-in-law.

Direct daughter-in-law only

The biblical prohibition covers one’s son’s wife, not the next generation’s daughter-in-law (which is rabbinic).