כורסיא - בדין כיסא לס"ת

§ The Sages taught in a baraita: Articles used in the performance of a mitzva may be thrown out after use. Although these items were used in the performance of a mitzva, they are not thereby sanctified. However, articles associated with the sanctity of God’s name, i.e. articles on which God’s name is written, and articles that serve an article that has God’s name written on it, even after they are no longer used, must be interred in a respectful manner. And these items are considered articles of a mitzva: A sukka; a lulav; a shofar; and ritual fringes. And these items are considered articles of sanctity: Cases of scrolls, i.e. of Torah scrolls; phylacteries; and mezuzot; and a container for a Torah scroll; and a cover for phylacteries; and their straps. Rava said: Initially, I used to say that this lectern in the synagogue upon which the Torah is read is only an article of an article of sanctity, as the Torah scroll does not rest directly upon the lectern but rather upon the cloth that covers it. And the halakha is that once an article of an article of sanctity is no longer used, it is permitted to throw it out. However, once I saw that the Torah scroll is sometimes placed directly upon the lectern without an intervening cloth. I said that it is an article used directly for items of sanctity, and as such it is prohibited to simply discard it after use.