Chapter 46: 4-6
Laws Pertaining to Forbidden Foods 4. Sometimes blood will be discovered together with milk - i.e., when the
animal was milked, blood came out together with the milk. A competent
Rabbinic authority should be consulted concerning this matter.
5. Meat and milk are forbidden to be cooked together; we are prohibited
both to eat and to benefit from the combination. Therefore, if an entity
[i.e., a pot, dish, or food] becomes forbidden because of a mixture of milk
and meat, a Rabbinic authority must be consulted. At times, it may be
forbidden to benefit from the object, while at times benefit may be permitted.
6. Two Jews who are familiar with each other may not eat at the same table
if one is eating meat and the other dairy products, unless they make a
clear sign of distinction - e.g., each will eat only on his individual
table mat or they place an article which would not usually be laced on the
table between them [for the purpose of separation]. They should take are
not to drink from the same vessel, because particles of food may become
stuck to it.
This prohibition applies even if the two [are feuding and] are careful not
to use the other's property.