Midrash for Bava Metzia 58:7
מצא שק או קופה וכל דבר שאין דרכו ליטול הרי זה לא יטול:
<b><i>MISHNAH</i></b>. IF ONE FINDS SCROLLS, HE MUST READ THEM EVERY THIRTY DAYS;<span class="x" onmousemove="('comment',' If left unused longer, they become mouldy and moth eaten. ');"><sup>6</sup></span>
Sifrei Devarim
"and thus shall you do with his garment": A garment is shaken out once in thirty days. He spreads it out for its need (i.e., to preserve it), but not for his honor.
Ask RabbiBookmarkShareCopy