דברים כח:מ הלכה: Shulchan Arukh, Orach Chayim

The Law The Law of Moving Fruits from Place to Place on a Holiday, and it has 3 Simanim: 1. We can drop fruits through a trapdoor (meaning, from "when your olives will drop" (Deuteronomy 28:40), as in, when fruits fall to the ground) on a holiday. One should not drop them through windows nor lower them on a ladder nor carry them from roof to roof, even if the two are the same (height).