[a - 42 lines; b - 15 lines]
1)[line 16]מזוזה חובת הדר הואMEZUZAH CHOVAS HA'DAR HU- the Mezuzah is an obligation on the one living there
2)[line 19]היא גופא גזרה ואנן ניקום וניגזור גזרה לגזרה?HI GUFAH GEZERAH V'ANAN NEKUM V'NIGZOR GEZERAH L'GEZERAH?- it itself (the prohibition against renting in Eretz Yisrael) is only a rabbinical decree; shall we then arise and made a [second] decree [to safeguard] a decree?
3)[line 23]קסבר כיבוש יחיד שמיה כיבושKA'SAVAR KIBUSH YACHID SHEMEI KIBUSH- lit. the conquest [at the initiative] of a single individual is considered a conquest. There is a Machlokes whether or not an area, such as Surya, which was captured through a private conquest, makes that area into part of Eretz Yisrael for all Halachic matters.
4)[line 41]אלפני מפקדינן אלפני דלפני לא מפקדינןA'LIFNEI MIPAKDINAN, A'LIFNEI D'LIFNEI LO MIPAKDINAN- on one "Lifnei Iver" (the prohibition against causing one to sin) we are commanded, but for an indirect, remote possibility of causing one to sin, we are not commanded
5)[line 42]מוגריMOGREI- they rented
21b----------------------------------------21b
6)[line 7]לכותיL'KUSI (KUSIM)
(a)The King of Ashur brought the people of Kusa to Eretz Yisrael and made them settle in the Shomron. They converted to Judaism after they found themselves under attack from lions. The Chachamim disagree as to whether their conversion was honest and valid (Geirei Emes) or not (Geirei Arayos).
(b)After the times of the Mishnah, the Kusim were found worshipping an image of a dove and the Chachamim gave them the status of Nochrim. (According to most Rishonim, this means that they decided to treat them like Nochrim l'Chumra, even if they were Geirei Emes. According to the RAMBAM (Peirush ha'Mishnayos), however, this means that they decided that their conversion was not sincere and deemed them Nochrim (Geirei Arayos) for all Halachic matters.)
(c)The Kusim kept many Mitzvos of the Torah down to their last detail. For example, Matzos that were baked by the Kusim, besides being perfectly free of Chometz, were fit to be used for the Mitzvah d'Oraisa of eating a k'Zayis of Matzah Shemurah on the Seder night (Tosefta Pesachim 2:2, Kidushin 76a). However, there were other Mitzvos that they did not keep at all. For example, the Kusim did not refrain from causing others to sin (which is prohibited by the verse, "Lifnei Iver Lo Siten Michshol" - "You shall not put a stumbling block before the blind" - Vayikra 19:14).
7)[line 10]אריסא אריסותיה קעבידARISA ARISUSEI KA'AVID- a sharecropper works for his own sake