(Mishnah): "V'Es Kol Shelalah Tikbotz El Toch Rechovah" - if it has no square (meeting place in the city), we build one. If [the square] was outside the city, we bring it in, for it says "Tikbotz El Toch Rechovah."

"V'Sarafta ba'Esh Es ha'Ir v'Es Kol Shelalah", and not spoils of Shamayim. This teaches that if there was Hekdesh inside, we redeem it (and do not burn it); if there was Terumah, we let it rot; if there was Ma'aser Sheni and Kisvei ha'Kodesh, they are buried.

"Kalil la'Shem Elokecha" - R. Shimon says, if you properly fulfill the law of Ir ha'Nidachas, I (Hash-m) credit you as if you offered an Olah totally burned in front of Me.

"V'Haysah Tel Olam Lo Sibaneh Od" - it may not be made even gardens or orchards; R. Yosi ha'Galili says so;

R. Akiva says, "Lo Sibaneh Od" like it used to be built (a city), but it may be made gardens or orchards.

"V'Lo Yidbak b'Yadcha Me'umah Min ha'Cherem Lema'an Yashuv Hash-m Charon Apo v'Nasan Lecha Rachamim v'Richamcha v'Hirbecha" - as long as there are Resha'im in the world, Hash-m's anger is in the world. When Resha'im cease from the world, anger leaves the world.

(Gemara): There is a Kal v'Chomer. Property that does not have knowledge, not for good or for evil, since it caused Tzadikim to live with Resha'im, the Torah said that it is burned. One who intends to veer his friend, and veers his from the good path to the evil path, how much the more so!

(R. Lazar): Lot proves this. He sat in Sedom only due to its money. Even he left with his hands on his head (emptyhanded, i.e. he could not take anything with him).

This explains "Maher Himalet Shamah" - it is enough that you save your life.

Question: It says "b'Yamav Banah Chi'el Beis ha'Eli Es Yericho." Chi'el was from [the kingdom of] Yehoshafat, and Yericho is in Binyamin (also under Yehoshafat's rule! Why does it say "in the days of Achav"? He ruled over other Shevatim?)

Answer: This teaches that Zechus comes through worthy people, and Chovah comes through Chayav. (Therefore the Aveirah is attributed to Achav. We explained the question and answer like KORBAN HA'EDAH, above 51a.)

Question: And so it says "ba'Aviram Bechoro Yisdah uvi'Seguv Tze'iro Hitziv Delaseha" - from his Bechor Aviram he did not have a source to learn (he was not punished beforehand. Why did he keep building until the death) of Seguv? That Rasha had what to learn from (all his other children, who died)!

Answer: [He kept building] because he wanted to increase wealth, and the curse ruled over [his children], and they went and diminished, to fulfill what was said "ki'Devar Hash-m Asher Diber b'Yad Yehoshua bin Nun."

(Beraisa - R. Shimon ben Elazar): They did not [re]build [Yericho]. Rather, they built another city [and called it Yericho].

After it is built, you may dwell in it.

(R. Yosi and R. Yehoshua ben Korchah): What do we learn from "u'Vanah Es ha'Ir ha'Zos Es Yericho"? This teaches that one may not build another city and call it Yericho, or build Yericho and call it the name of another city.

[The Mishnah said "Lo Sibaneh Od" - like it used to be, but it may be used for gardens or orchards.] Similarly, it says "Lo Sosifun Lashuv ba'Derech ha'Zeh Od" - you may not return to dwell there (like initially, in the days of Yakov), but you return for business (selling, to buy) merchandise or to conquer the land. (MESHECH CHACHMAH Devarim 13:17 DH Lo)