Oholos 12:3 - 12:4

נסר – [a board] which is long and narrow, and when it is placed on the mouth of the oven, it extends outward a handbreadth from the east and a handbreadth from the west but from the south and the north it does not extend outward.

טומאה בצד זה – underneath the board in the east or in the west.

כלים שבצד השני טהורים – that there Is no room for the defilement to pass, for the board doesn’t have leftover from the north or from the south.

ורבי יוסי מטמא – for he holds that the oven does not form a partition. But the Halakha is not according to Rabbi Yossi.

הבטח (a hollow column-like receptacle of rain water near the house; Maimonides holds that it is a projection in front of the window to stand upon in climbing) – There are books that have the reading of אבטח, and it is a building that is made similar to a bathtub in bathhouses that they place water in them for washing, and a board is placed upon it for the ceiling and board has leftover from two sides. But if there is defilement from this side, it doesn’t go out to the other side because the hollow column-like receptacle of rain water near the house interposes.

היה בו זיז (if it had an attachment – a projection from the door frame serving as a shed over the entrance, or a molding projecting from a window-sill as a bracket) – there was a beam going out above from the hollow column-like receptacle of rain water from the east to the west.

רואין את הבטח כיאלו אינו – for even though the hollow column-like receptacle of rain water near the house interposes with the board, in connection with the attachment/a projection from the door frame serving as a shed over the entrance – it does not interpose. And the Halakha is according to Rabbi Yehoshua.

סנדל של עריסה – the cradle of a baby that regularly is placed underneath its feet like a metal sandal for beauty or in order that it not rot/decay.

שפחתו בתוך הבית (that was broken through within the house) – that the roof of the upper chamber was broken through/reduced that the crib is placed upon it and the sandal of the cradle is seen within the house from the reduction that is in the roof, and defilement is within the house.

אם יש – in the place of the breach.

פותח טפח – it brings the defilement from the house to the upper chamber.

ואם לאו – that there isn’t there an opening of a handbreadth.

מונין בו כדברך שמונין במת – that the sandal and the crib are impure with a ritual impurity for seven days like the law concerning impure vessels that come in contact with vessels, but the baby is impure with ritual impurity until the evening, as it is taught in the Mishnah in the first chapter (Mishnah 2).