Shabbat

Rather said Abaye: It is [forbidden] by Rabbinical law, in order that one should not act in the very way he acts on weekdays. Abaye collected some general principles of Baraithas, and he recited: One must not stretch out a leather bag,  a strainer, a canopy,  or a camp chair;  and if he does he is not culpable. but it is forbidden. One must not make a permanent tent, and if he does he is liable to a sin-offering. But a bed, chair, three-legged stool, and a footstool may be set up at the very outset. NOR POUR [WINE] THROUGH A SUSPENDED (STRAINER] ON THE SABBATH. The scholars asked: What if one does strain [wine]? — R. Kahana said: If one strains he incurs a sin-offering. R. Shesheth demurred: Is there aught for which the Rabbis impose a sin-offering whereas R. Eliezer permits it at the very outset? To this R. Joseph demurred: Why not? Surely there is a 'golden city',  where R. Meir imposes a sin-offering. while R. Eliezer gives permission at the very outset. What is this? For it was taught: A woman must not go out with a 'golden city', and if she does go out, she is liable to a sin-offering: this is R. Meir's view: but the Sages rule: She may not go out [with it]. yet if she goes out she is not culpable. R. Eliezer maintained: A woman may go out with a 'golden city' at the very outset! — Said Abaye to him, Do you think that R. Eliezer refers to R. Meir, who rules that she is liable to a sin-offering? He refers to the Rabbis, who maintain that there is no culpability. though it is forbidden; whereupon he said to them, It is permitted at the very outset. On what grounds is he warned?  — Rabbah said: On the grounds of selecting;  R. Zera said: On the score of sifting.  Rabbah said, Reason supports my view: What is usual in selecting? One takes the edible matter and leaves the refuse, so here too he takes the edible [the wine] and leaves the refuse. R. Zera said, Reason supports my view: what is usual in sifting? The refuse [remains] on top whilst the edible matter [falls] below, so here too, — the refuse [remains] on top whilst the edible matter [drops] below. Rami b. Ezekiel recited: One must not spread a doubled-over sheet;  yet if he does he is not culpable,  but it is forbidden. If a thread or a cord was wound about it,  it may be spread at the very outset. R. Kahana asked Rab: What about a canopy?  A bed too is forbidden. What about a bed? A canopy too is permitted, he replied. What about a canopy and a bed? A canopy is forbidden, replied he, while a bed is permitted. Yet there are no contradictions: when he said, A bed too is forbidden, [he meant one] like that used by the Carmanians.  When he said to him, A canopy too is permitted, [he referred to] one like Rami b. Ezekiel['s].  A canopy is forbidden while a bed is permitted refers to one like ours.  R. Joseph said: I saw the canopy beds of R. Huna's house stretched out at night and thrown down in the morning. Rab said in R. Hiyya's name: A [door] curtain may be hung up and taken down.  And Samuel said in R. Hiyya's name: