Rif Shabbat 20a

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20a

{Shabbat 42a continues}
and Bet Hillel say: Both hot into cold and cold into hot are permitted. When are these words said? to a cup, but in the case of a bath {where the water must be very hot}, hot into cold [is permitted], but not cold into hot. And Rabbi Shimon ben Menassia forbids it.

{The Rif omits the statement of Rav Nachman: The halachah is as Rabbi Shimon ben Menassia. }

And the conclusion of the sugya is that the halacha is like Bet Shammai, for we say {in the continuation}: Rav Huna the son of Rav Yehoshua said: I saw that father {Abba - our gemara: Rava} was not particular about vessels, for Rabbi Chiyya taught {in a brayta}: A person may pour a jug of water into a basin of water, hot into cold or cold into hot.

MISHNA:
IF A STEW POT OR A BOILING POT IS REMOVED SEETHING; [FROM THE FIRE], ONE MUST NOT PUT SPICES THEREIN,

{Shabbat 42b}
BUT ONE MAY PUT [SPICES] INTO A DISH OR A TUREEN {which is a second vessel}. R. JUDAH SAID: HE MAY PUT [SPICES] INTO ANYTHING {even a first vessel} EXCEPT WHAT CONTAINS VINEGAR OR BRINE.

Gemara:
And the halacha is like the first Tanna.
Rav Yosef thought to say that salt is like spices, that in a first vessel it boils, and that in a second vessel it does not cook.
Abaye said to him: Rabbi Chiyya learnt {in a brayta}: Salt is not like spices, for it boils even in a second vessel.

And this argues with Rav Nachman, for Rav Nachman said: Salt requires as much boiling as ox flesh.

And some say: Rav Yosef thought to say that salt is like spices, that in a first vessel it boils, and that in a second vessel it does not cook.
Abaye said to him: Rabbi Chiyya learnt {in a brayta}: Salt is not like spices, for even in a first vessel it does not boil.
And this is in accordance with Rav Nachman, who said: Salt requires as much boiling as ox flesh.

And the halacha is like the second formulation.

MISHNA:
ONE MAY NOT PLACE A VESSEL UNDER A LAMP {on Shabbat} TO CATCH THE OIL.
BUT IF IT IS PLACED THERE BEFORE SUNSET {that is, on Friday}, IT IS PERMITTED.
YET ONE MAY NOT BENEFIT FROM IT, BECAUSE IT IS NOT OF THAT WHICH IS PREPARED.

Gemara:
Rava cited Rav Chisda {our gemara only has "Rav Chisda said"}: Though they [the Sages] said: A vessel may not be placed under a fowl to receive its eggs,