Gittin 41: Freeing Slaves for Tikkun Olam

2 mishnayot: 1. A slave whose owner uses him as a payment of debt to another person, but then is freed before he functions as that payment. What happens?? A tikkun olam decree to keep the peace - and ensure that the slave remains free. Plus, rereading the mishnah by the Gemara - in two ways (by Rav and Ulla). 2. A slave who is half-freed and half-slave... an in-between status that is not easily resolved. How should this person function? It's a dispute between Beit Hillel and Beit Shammai, and - unusually - Beit Shammai is upheld by Beit Hillel, for the sake of the good of this person.