https://thornhillkollel.com/wp-content/uploads/2016/04/eruvin-perek-vav-mishna-6-when-different-families-living-in-a-mansion-together-all-need-to-contribute-to-the-eruv-chatzeiros.mp3“eruvin perek vav mishna 6 when different families living in a mansion together all need to contribute to the eruv chatzeiros”.