Reference for Shabbat 128:17

תנן ולא בזוג אע"פ שפקוק ותניא אידך פוקק לה זוג בצוארה ומטייל עמה בחצר

As for an old woman [not going out] with a young woman's hair, that is well, because it is an improvement for her; but [that] a young woman [may not go out] with an old woman's [hair]. why [state it], seeing that it is unsuitable for her?]<span class="x" onmousemove="('comment',' No young woman would dream of wearing ribbons made from an old woman's hair. — The translation follows one interpretation given in Tosaf. Tosaf. offers another, which is based on a reversed order of the text. ');">¹⁵</span>

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