Rendered forbidden (kidesh): The produce, if it increased by a two hundredth. It [used] the language of Scripture (Deuteronomy 22:9), "lest it be rendered forbidden (tikdash)."

The reason is that they wanted: To build the wall - as it was the will of both of them - that is when the Sages obligated both of them to build [it]. And later, it challenges, "When they wanted? What [does it matter], let them retract it?" However if the two of them did not want it - such that one said, "It is enough to divide it with a bordermark of low wooden pegs planted into the ground" - we do not force him. And the other one may not [force the other and] say to him, "I do not want you to see my business."

A division: The splitting of a courtyard, such that they were in agreement about the splitting. And it is when there is not enough [room] for there to be eight ells for this one and for that one, such that one may not force his fellow to split it. And for this [reason], it taught that [it is if they wanted] - that since they want to split it, they build a wall of stones [even] against their will. And if one comes to say, "I do not want this expense, but rather [only] a mere bordermark," we do not listen to him, because of damage to visual privacy.

I would say that a mere bordermark: [That this] is what the mishnah is discussing. As it too is called a partition. And that which it taught, "who wished," is about the splitting; and it is when it is not subject to the law of division - it teaches us [it must be] a wall; and that which it taught, "who wished," is about the wall. As if they did not want [to split it with a wall], let them split it with a bordermark.

Where one of them convinced his fellow: He requested from him, the division with a barrier.

Lest you say [that] he can say, "When I was persuaded by you about the barrier, I was persuaded about a thin barrier - such as one of boards, since it is thin - and to reduce the airspace; and [that is enough, since] with it, there is no damage to visual privacy. Otherwise, pull the width of the wall into your portion, except for a small [space]. But I was not persuaded to build a thick wall of stones to also reduce my usage [of the courtyard's space]."

It is prohibited for a person to stand, etc.: That he not damage it with an evil eye.

But behold, it teaches, "And similarly": Such that it is implied that both of them have one reason, the garden and the courtyard.

We obligate him: And here it was not taught, "They wished," but it is rather [even] against his will.

Fell is different: As the first [owners] already consented to the wall.

And he who asked it, why did he ask it: And did he not know that fell is different?

It was necessary [to teach] the latter clause: Meaning to say, the law is also the same from the start (before it fell). So that which it taught, "If it fell," is because the latter clause makes us understand that we do not obligate [him to rebuild] more than four ells. And even though the first [wall] was higher, we do not obligate him.

We compel him: [We compel] every resident of the courtyard to give his share to the construction.

A gatehouse: Since we build a wall in front of the gate [that is] curved all around. And in that circumference, we make a small entrance on the side, on account of [preventing] damage from the vision of people in the public domain, such that they not see into the courtyard.

Damage of the public: Since all the people in the public domain stare there.

We do not divide: One may not compel his fellow to divide.

The windows: One of those sharing the courtyard who builds a wall in the courtyard opposite the windows of his fellow, whether above, etc. - if the wall is higher than the windows, he must raise [it] four ells above them, as it continues to explain: So that he will not support himself on his wall and bow down and see into his fellow's windows.

Whether below: If the wall is lower than the windows, he must lower if four ells from them so that he not stand on the width of his wall and see.

Or opposite them: He must distance the wall four ells from the windows so that it will not darken [the interior of his fellow's house].

Damage of a house is different: As a person does private things in his house.

A parapet four ells high: So that he will not look into the courtyard of his fellow when he uses his roof.

But I do not know when you will go up: To use your roof.