Leviticus 27:7

ואם מבן ששים שנה AND IF IT BE FROM SIXTY YEARS OLD [AND ABOVE; IF IT BE A MALE THEN THE VALUATION SHALL BE FIFTEEN SHEKELS, AND FOR THE FEMALE TEN SHEKELS] — When one approaches old age a woman is more likely to be of the same importance as a man therefore a man decreases to beyond a third of his valuation when he becomes old (his ערך being fifty shekels and after sixty only fifteen, which is less then 17, the approximate third of 50), whilst a woman decreases only to exactly a third of her valuation (which was previously thirty shekels, and after sixty becomes ten), because people say (i. e. there is a familiar saying): “An old man in the house is a snare (a nuisance) in the house, an old woman in the house is a treasure in the house and a good omen in the house” (Arakhin 19a).

And if it be from sixty years old and above; if it be a male, then the estimation shall be fifteen shekels, and for the female ten shekels.

וְ֠אִ֠ם מִבֶּן־שִׁשִּׁ֨ים שָׁנָ֤ה וָמַ֙עְלָה֙ אִם־זָכָ֔ר וְהָיָ֣ה עֶרְכְּךָ֔ חֲמִשָּׁ֥ה עָשָׂ֖ר שָׁ֑קֶל וְלַנְּקֵבָ֖ה עֲשָׂרָ֥ה שְׁקָלִֽים׃