Rudi was Adi Da’s first human Teacher, he spoke of his time with him and its utility here
The first level of sadhana or spiritual discipline that I had to endure with a human teacher wasn’t any sort of otherworldly yoga, nor did it involve love and acknowledgment from the Guru, or even kind words. I spent about two minutes with Rudi when I first met him. He told me to get a job and come back in one year! But I was perfectly willing to do that. As it happened, within a month or two later, my spiritual work with him did begin. It wasn’t in fact necessary for me to be away a year, but I was perfectly willing for it to be so I was ecstatically happy to have made this contact, to have a beginning, to have become capable of spiritual life. It was a profound joy to me to have found someone who was obviously capable of drawing me into a condition at least more profound than the one I was living. From that moment it was one demand on top of the other. It was work. Work was the sadhana, work was the spiritual life. There was no “Come to me and sit and chat.” It was “Take out the garbage, sweep out this place.” If I came to sit and talk with Rudi, I was most often told “Scrub the floor,” or “There is a new shipment in the warehouse, so go and unload my truck.” I worked constantly, day and night, for four years. On top of the heavy physical labor, Rudi had me going to seminaries, where I studied Christian theology, masses of historical literature, ancient languages, all kinds of things in which I had no fundamental interest. I had to live in Protestant and Orthodox seminaries, but I was not a Christian. My sadhana was continuous work and self-transcendence. There was no ending of it. Even in sleep and dreams, there was no ending of it.
from The Method of The Siddhas (My “Bright” Word)
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This video communicates something of what Rudi (Swami Rudrananda) was teaching and how he taught
