四分律比丘含注戒本 1.170

1.170

女人有二十種，母護、父護、父母護，兄護、姊護、兄姊護、自護、法護、姓護、宗親護、自樂為婢、與衣婢、與財婢、同業婢、水所漂婢、不輸稅婢、放去婢、客作婢、他護婢、邊方得婢是也。男子亦有二十種，並同上列。

There are twenty kinds of women: protected by the mother, protected by the father, protected by both parents, protected by a brother, protected by a sister, protected by both brother and sister, self-protected, protected by the Dharma, protected by clan, protected by kinsmen, one who willingly becomes a slave-servant, a slave-servant given clothing, a slave-servant given wealth, a slave-servant who shares the same work, a slave-servant swept away by water, a slave-servant not paying taxes, a slave-servant set free, a hired slave-servant, a slave-servant protected by another, and a slave-servant captured in a border region. There are likewise twenty kinds of men, identical to the list above.