Grapes symbolize desire. That’s why “you may eat as many grapes as you desire, …but you shall not put [any] into your vessel” for the desire is foreign. When you get included into that desire, meaning rise to the next level, there you can receive into yourself without descending back to your level.
This refers to two Partzufim, two souls: big and small. If a small soul rises to the big one and gets included into it, like an embryo into its mother’s womb, then it can feed on everything there is on the upper level. However, it cannot descend to its level since it would be like death, like bodily infection.
When you are able to ascend and descend freely, understanding that you may not use this desire on your own level, the inclusion in the upper level will gradually raise you, and you will begin to ascend yourself and build your own “vineyard.”
Interestingly enough, on the farming fields in Israel, one can pick and eat all the fruits and vegetables he wants, but if wants to take them away, he has to pay for it. Everything has its roots and branches. This is the law of the Torah.
You can enter any field, say the sunflower field, choose whatever you like, and the owner will not say a word about it. He probably would not even look at you, though he knows he will be stripped of. But it doesn’t matter, this is a commandment. It means that the Creator will allow to replenish the harvest.
When you enter your neighbor’s standing grain, you may pick the ears with your hand, but you shall not lift a sickle upon your neighbor’s standing grain (The Torah, Deuteronomy, 23:26).
You may take as many ears of wheat as you need at the given moment because you’re not producing anything from it. But you cannot cut the harvest of a friend with a blade since that is an entire production (egoistic reception).
From KabTV’s “Secrets of the Eternal Book” 10/26/16