כִּֽי־יִמָּכֵ֨ר לְךָ֜ אָחִ֣יךָ הָֽעִבְרִ֗י א֚וֹ הָֽעִבְרִיָּ֔ה וַעֲבָֽדְךָ֖ שֵׁ֣שׁ שָׁנִ֑ים וּבַשָּׁנָה֙ הַשְּׁבִיעִ֔ת תְּשַׁלְּחֶ֥נּוּ חָפְשִׁ֖י מֵעִמָּֽךְ׃
你的弟兄，無論是希伯來男人或希伯來女人，若被賣給你，服事你六年，到第七年，你就要讓他自由，離開你。
Mishnah Kiddushin
A Hebrew slave is acquired by money and by document; And acquires himself by years, by Jubilee, and by deduction from the purchase price. A Hebrew maidservant is greater in that she acquires herself by ‘signs [of physical maturity]’. He whose ear is bored is acquired by boring, and acquires himself by Jubilee or his master's death.