Rif Shabbat 59a {Shabbat 141b continues ... 142b}

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59a

{Shabbat 141b continues}
but one may rub his foot with oil and place it in his shoe or sandal; he may also oil his whole body and roll himself on a leather spread without fear.

And Rav Chisda said: They learnt this only [if his intention is] to polish it {to polish the leather when he puts his foot in}; but [if it is] to dress it {=to soften the leather or make it more pliable}, it is forbidden.

The Sages learnt {in a brayta}: A small[-footed] man must not go out with the shoe of a large[-footed] man {lest it fall off and he come to carry it} but he may go out with [too] large a shirt. A woman must not go out with a gaping shoe, nor may she perform chalitzah therewith; yet if she does perform chalitzah therewith, the chalitzah is valid. And one must not go out with a new shoe -- of what shoe did they rule this? Of a woman's shoe. {Since she is particular about the fit, and if it is not exact, she may remove and carry it.}

Bar Kappara taught: They learnt [this] only where she had not gone out therein one hour before nightfall; but if she went out therein one hour while it was yet day {on Friday}, it is permitted.

And a shoe which is on its last {imus} {last = A block or form shaped like a human foot and used in making or repairing shoes} may be removed on Shabbat.

To explain, an imus is the form for the shoe.

We learn in Zevachim, in perek Dam Chatat {94b}:
Rava expounded: it is permissible to wash {lechabes = clean with water} a shoe.
Rav Papa said to Rava: But many times I stood before Rabba, and they scrubbed his garments with water. Scrubbing yes, but washing, no!
Rava recanted, and appointed a speaker {Amora} upon this and expounded: The matters which I told you were an error at my hands. Rather, so did they say: Scrubbing is permitted but washing is forbidden.

END PEREK TWENTY

BEGIN PEREK TWENTY-ONE

MISHNA:
A MAN MAY TAKE UP HIS SON WHILE HE HAS A STONE IN HIS HAND OR A BASKET WITH A STONE IN IT; AND UNCLEAN TERUMAH MAY BE HANDLED TOGETHER WITH CLEAN [TERUMAH] OR WITH HULLIN. R. JUDAH SAID: ONE MAY ALSO REMOVE THE ADMIXTURE [OF TERUMAH IN HULLIN] WHEN ONE [PART IS NEUTRALIZED] IN A HUNDRED [PARTS].

Gemara:
The academy of Rabbi Yannai said: This {the case in which man who may take up his son while the son is holding a stone} refers to a child who pines for his father.

{Shabbat 142a}
And specifically a stone, since if it falls, he will not come to carry it, but a dinar, which if it falls he may come to carry it, no.

{Shabbat 142b}
MISHNA:
IF A STONE IS ON THE MOUTH OF A CASK [OF WINE], ONE TILTS IT ON A SIDE AND IT FALLS OFF.
IF IT [THE CASK] IS [STANDING] AMONG [OTHER] CASKS, HE LIFTS IT OUT, TILTS IT ON A SIDE, AND IT FALLS OFF.

IF MONEY IS LYING ON A CUSHION, ONE SHAKES THE CUSHION, AND IT FALLS OFF. IF DIRT IS UPON IT, ONE WIPES IT OFF WITH A RAG; IF IT IS OF LEATHER, WATER IS POURED OVER IT UNTIL IT DISAPPEARS.