A book of laws, customs, and ethical teachings written in the form of a will by the Prague-born rabbi for his sons. His son, Yeshayahu ben Avraham HaLevi Horowitz, was a leading authority in his generation and frequently quoted from this work.
In Hebrew "Sefer Igrot," a collection of letters by Rabbi Meir Abulafia, also known as the "Ramah." These letters primarily address theological discussions, notably concerning Maimonides' views on resurrection.
