Answer: Learning “from mouth to mouth” means sharing the screen because “mouth” (Peh) is the location of the screen. Such connection is regarded as “Rucha Be-Rucha” (at the level of Ruach), and this is the type of communication a student should attain with his teacher.
This is the degree of annulment of the lower one’s self, thanks to which he attains connection with the upper one. This spiritual state is not easy to achieve, but at least a student must do what he can in this world, by following his teacher’s advice as if it were a law for him. It is a simple practical recommendation that anyone can use, and it is regarded as the minimal degree of self-annulment before the upper one, which we are willing to perform due to our egoistic interests.
If I desire to gain spirituality from the teacher, I have to annul myself before him like in the army: If an order is given, it’s carried out. The teacher talks about building a correct intention, annulling oneself, exerting effort, participating in dissemination, and everything else that is required of a student. The student, in his turn, must listen. As a result, through the point of connection that emerges, he will receive the Light that Reforms and comprehend what he is told.
In the degree that a student annuls his egoism, he automatically transforms into a form where this understanding occurs through receiving an imprint of spirituality. And through this imprint, we begin to comprehend the teaching. If the lower one annuls himself, the upper one imprints his structure, his 10 Sefirot in the lower one.
Let’s hope that we will earn the reward of Rabash becoming our Teacher.
From the 4th part of the Daily Kabbalah Lesson 9/12/10, “Letter 38”