Answer: The Torah says: “Do not boil a kid in its mother’s milk.” Meat cannot be eaten with milk since by that you cause a short circuit between the most important things, the right and left lines.
Milk symbolizes the right line, the Light of Hassadim (mercy) that stems from the desire to bestow. So on the physical level, milk is food for children. However, the left line, meat, symbolizes receiving, rigidity, egoism.
We must not bring these two lines together because they can only connect in the middle line when you receive from the left egoistic line only what the right altruistic line can include in it and make the middle line out of the two.
In order to create the middle line, we have to descend from ten to six Sefirot, from GAR to VAK which means to bring the state of greatness of the Partzuf to smallness, because until the end of correction it’s impossible to receive in order to bestow in the whole desire, except for a small quantity.
Malchut can be used only in the ascent to Bina. The ascent of Malchut to Bina is a state of smallness or six Sefirot. Therefore it’s possible to eat dairy products six hours after eating meat.
In our world, six hours is a conditional measure, and therefore in different communities the time of separation between meat and milk differs. In certain communities the break between dairy and meat is three hours and in others it’s an hour. But on the whole, most communities keep six hours.
As for meat, it can be eaten half an hour after dairy (except for hard cheese, which is the same as meat). Although the laws that forbid the combination of milk and meat are not so convenient, they stem from the smallness of the spiritual Partzuf.
Question: Do our friends all over the world have to keep these laws?
Answer: No, we don’t dictate anything to anyone. This refers to the spiritual work and its goal to receive in order to bestow. We can try to persuade people from morning to night that it’s important to feel love towards a friend, but we cannot demand that someone actually do it.
Moreover, one can keep the tradition and another cannot. We never demand of others but only of ourselves. On the other hand, those who don’t keep the tradition shouldn’t interfere with the customs of those who do. We should respect the customs of others, no matter what they are.
From the Daily Kabbalah Lesson 4/17/14, Questions and Answers with Dr. Laitman