Talmud su Ohalot 3:8

HALAKHAH: Two thatched roofs one on top of the other, the upper one has more sunshine than shade, the lower one has not more sunshine than shade¹²⁸This is not the case of the Mishnah, since there one must presume that both roofs are qualified with more shade than sun. Here the question is when thatching in layers is considered to constitute one roof.. Together, their shade is more than their sunshine. How much may be between them so that they combine? Two Amoraim, one said, ten, the other one said, four¹²⁹Since the numerals are in the masculine, all measures are hand-breadths.. The one who said ten objected to the one who said four: because of a tent? We find a tent which is one hand-breadth¹³⁰Mishnah Ahilut3:7. In matters of impurity of the dead, one cubic hand-breadth is considered a tent. The minimum height of a sukkah is ten hand-breadths. Therefore we find 1 or 10 units as legitimate requirements, but not 4. Babli 10a..