Kiddushin, Chapter One, Mishnah Three
In todays mishnah we learn how Canaanite slaves are acquired. We should note that Canaanite slaves essentially become Jews by being owned by Jews. The males are usually to be circumcised, both male and female slaves must undergo ritual immersion and according to halakhah are obligated by most of the commandments.
A Canaanite slave is acquired by money, deed, or by possession,
And acquires himself by money through the agency of others, and by document through his own agency, the words of Rabbi Meir.
The Sages say: by money, through his own agency, and by document, through the agency of others, providing that the money comes from others.
Section one: Money and deed acquire Canaanite slaves, just as they acquire Hebrew slaves. In addition, Canaanite slaves can be acquired through possession, which could also alternatively be translated as presumption of ownership. We learned the rules of possession in the third chapter of Bava Batra. Practically this would mean that a slave, who treated a certain person as if that person were his owner, would become the property of that person.
Section two: Both Rabbi Meir and the Sages agree that a slave acquires his freedom either through a manumission document or through his freedom being purchased with money. However, they disagree over whether or not the slave may purchase himself back. According to Rabbi Meir a Canaanite slave can never own property. Any property which he would acquire would automatically become the property of his owner, since the owner owns the slave. Therefore, only other people may purchase the slaves freedom. When it comes to a document, the document must be received by the slave himself.
The Sages disagree on both counts. They hold that a slave may, under certain circumstances, own his own property. This is possible if other people give the slave money with the condition that the owner not take possession of that money. According to the Sages either he or others may purchase his freedom. Similarly, they disagree about the document. The master can write out a manumission document, give it to another person beside the slave and thereby free the slave. Note that the Sages could have stated that a slave is acquired by documents or money through his own agency or the agency of others. This would have been a clearer and slightly briefer statement of the sages intent. Instead, the mishnah phrases their statement as the opposite of Rabbi Meirs statement in order to retain the parallelism.