Talmud (Rodkinson Edition) — Book 2…
“ If a man deposit his Erub (for the combination of courts) in a vestibule, gallery, or balcony, it is not a lawful Erub. Should a man reside in any such place, who has not joined in the Erub, he cannot prevent the other inmates of the court (from carrying therein) . If a man deposit his Erub in a hay-loft, or in a stable, or in a woodshed, or in a granary, it is a legal Erub, and one who dwells there (if he had not joined in the Erub) impedes the other inmates of the court. ”
