Siman 176

(10.) When he handed the aforementioned book to the two aforementioned men, I did not know of this at all — for he did the matter in great concealment and no one knew of this. Afterwards at the beginning of the summer 5566 I came before him, and he said to me: "I have given you merit in a commandment — in that I had you write that aforementioned book." And he said: "The book of yours has already begun to do deeds in the world."