Siman 386

(48.) He told that his practice was to speak very many supplications and entreaties before Hashem Yisburach while sitting at the table at the Third Meal of the Sabbath, alone in his room. And he would speak much before Hashem Yisburach — to the point where Torah began to speak forth from him on its own, without any intention at all. And he inclined his ear to the words of Torah that had gone forth from his mouth then — and saw they were beautiful words fitting to say. And those are the very words that I said periodically at the close of the Sabbath after Havdalah — meaning those words come from the Torah he said at the Third Meal of the Sabbath...