If one leaves heirs some of whom are minors and some of whom are of age - with various stipulations - what is the halakhah? Plus, if one married a child off in a "wedding house" - the son acquires the house, at least under the right conditions. Also, if one writes his estate over to his wife, she is then an administrator of the estate - with other halakhot which are each established according to the tradition. Also, a new mishnah - brothers who are partners in business, and then they are "called up" -- in service to the Romans (or Persians), with a key historical backdrop for this halakhah - how does that service pay for what all of them owe, or how doees earnings from such service reach all of them? Likewise, if a brother takes ill.... and the level of responsibility is spread out among the brothers (or not). And another mishnah: Groomsmen who give gifts to the groom, and his reciprocal gifts back to them.