Shabbat

causing heat to ascend,  [peat] of olives causes heat to ascend, but not [peat] of poppy seed. Rabbah and R. Zera visited the Resh Galutha,  and saw a slave place a pitcher of water on the mouth of a kettle.  Thereupon Rabbah rebuked him. Said R. Zera to him: Wherein does it differ from a boiler [placed] upon a boiler? — There he [merely] preserves [the heat],  he replied, whereas here he creates it.  Then he saw him spread a turban over the mouth of a cask and place a cup  upon it. Thereupon Rabbah rebuked him. Said R. Zera to him: Why? You will soon see,  said he. Subsequently he saw him [the servant] wringing it out.  Wherein does this differ from [covering a cask with] a rag?  he asked him. There one is not particular about it;  here he is particular about it. [NOR WITH] STRAW. R. Adda b. Mattenah asked Abaye: Is it permissible to handle flocking in which one stored [food]?  Said he to him: Because he lacks a bundle of straw, does he arise and renounce a bundle of soft flocking? — Shall we say that the following supports him: We may store [food] in wool clip, hatchelled wool, strips of purple [wool],  and flocking, but they may not be handled? — As for that, it is no proof: this may be its meaning: if one did not store [food] in them, they may not be handled. If so, why state it? — You might say, They are fit for reclining:  hence we are told [otherwise]. R. Hisda permitted stuffing to be replaced in a pillow on the Sabbath. R. Hanan b. Hisda objected to R. Hisda: The neck [of a shirt] may be undone on the Sabbath,  but may not be opened;  nor may flocking be put into a pillow or a bolster on a Festival, and on the Sabbath it goes without saying? — There is no difficulty: one refers to new ones, the other to old ones.  It was taught likewise: Flocking may not be put into a pillow or a bolster on the Festival, and on the Sabbath it need not be stated; if it falls out, it may be replaced [even] on the Sabbath, while on Festivals it goes without saying. Rab Judah said in Rab's name: One who opens the neck [of a shirt] on the Sabbath incurs a sin-offering.  R. Kahana objected: