R. Eliezer says: Just as one does not fulfill his obligation on the first day of the festival with his neighbor's lulav, so, he does not fulfill it with his neighbor's succah, it being written "shall you make for yourself." And the sages say: He does not fulfill his obligation with his neighbor's lulav, it being written (Vayikra 23:40) "And you shall take for yourselves the fruit of the hadar tree (the ethrog), branches of date-palms (the lulav), a bough of the tree avoth (hadas), and willows of the brook (aravoth)" — one (set) for each individual; but he does fulfill his obligation with his neighbor's succah, it being written (Ibid. 42) "Every native in Israel shall dwell in Succoth" — all of Israel may dwell in one succah.