If one has crops that he has not taken any tithe from and he puts let's say wine in a jar and closes it and calls it maasar sheni [the second maasar] then the jar itself becomes maasar sheni. [Tractate maasar sheni 3. mishna 12]
Both the Mishna Rishona [a commentary by a person named Ephraim Isaac] and the Tiferet Israel ask on this from tracatate Msaasar sheni 1 mishna 4 and 5. There it says if you buy a closed jar of wine of maasar sheni in Jerusalem the jar goes out from the category of the second maasar to become secular.
To me it seems there is a difference between calling a name of maasar sheni to crops that have not been tithed yet and buying something with maasar Sheni. So I do not see any question in the first place.
The Tiferet Israel answers this question from the mishna in which one sells closed jars in a place where one usually buys open jars, but that answer depends on there being some connection between calling a name and buying.
[The problem that the Tiferet Israel deals with is why are the jars not consecrated? But to me it seems the reason is the same that when buys a animal with the money of the second tithe that the leather is not consecrated.]
To me it seems there is a difference between calling a name of maasar sheni to crops that have not been tithed yet and buying something with maasar Sheni. So I do not see any question in the first place.
The Tiferet Israel answers this question from the mishna in which one sells closed jars in a place where one usually buys open jars, but that answer depends on there being some connection between calling a name and buying.
[The problem that the Tiferet Israel deals with is why are the jars not consecrated? But to me it seems the reason is the same that when buys a animal with the money of the second tithe that the leather is not consecrated.]
