https://thornhillkollel.com/wp-content/uploads/2016/06/eruvin-perek-yud-mishna-4-moving-an-object-in-a-different-domain-and-placing-objects-on-a-ledge-on-Shabbos.mp3“eruvin perek yud mishna 4 moving an object in a different domain and placing objects on a ledge on Shabbos”.