Rav Yitzchok of Neshchiz related about his father Rav Mordechai: One time, the Rambam himself appeared before my father and complained why my father did not study his sefer, the Yad HaChazoka (also known as the Mishne Torah). My father responded that he was very busy and preoccupied with communal matters and inundated with requests from congregants and other Jews requesting all manner of blessings and salvation. The Rambam then told my father that at least he should keep his sefer on the table at all times and he promised that if any sick person came before my father or if someone would request his berocha to heal the sick, then if my father would open the Rambam’s sefer and study it, he, the Rambam, would send a refua and heal him. And so it was that the Rambam’s sefer was always on my father’s table.” (Layeshorim Tehilla p. 78)
