Oholos 10:1 - 10:2

ארובה שהיא בתוך הבית (a hatchway which is in the midst of the house) - and it is uncovered to the airspace, for there is no upper chamber roof from above.

כנגד ארובה טהור (that which is opposite the hatchway) – vessels that are placed below on the ground opposite the hatchway and they see the face of the sky are ritually pure.

מלמעלן (from above) – on the garret window in the wall projecting above the flat roof.

עירב את הטומאה (he combined the defilement) – and everything is impure. The house is impure and the person who places his foot in it is also impure.

וכנגד הטומאה טמא – that the olive’s bulk [of defilement] is stretched to here and to there.

אין בארבה פותח פתח – surely it comes to tell us that with less than a handbreadth we don’t say that with defilement there is a joining/לבוד (i.e., that two solid surfaces are considered to be joined if there is a gap of less than three handbreadths between them).

נתן את רגלו – the person who sets [his foot] is pure, for it resembles something concealed concerning it, for the defilement does not enter into the tent and doesn’t leave from it with less than an opening of a handbreadth.

אם טומאה קדמה את רגלו טמא – that surely at the time when he set his foot, he overshadowed over the defilement.

ואם רגלו קדמה את הטומאה טהור – that before the defilement came, a concealed tent had already been made, and at the time that the defilement enters there is no garret window in the wall projecting above the flat roof that is open a handbreadth in order that the defilement can leave from it.

שתי רגלים זו על גב זו – of two people, and the first placed his foot on top of the garret window in the wall and the foot of the second [person] is lying on the foot of the first [person], and afterwards, the defilement enters the house underneath the garret window in the wall near the roof, and after that, the first [person] removes his leg and it is found that the foot of the second [person] is placed on the garret window, and even though this second [foot] overshadows over he defilement when the first [person] removed his foot, the second [person] is ritually pure, because the foot of the first [person] preceded the defilement. But the Halakha is not according to Rabbi Shimon nor according to Rabbi Meir.