משנה הורו בית דין לעבור על אחת מכל מצות האמורות בתורה והלך היחיד ועשה שוגג על פיהם בין שעשו ועשה עמהן בין שעשו ועשה אחריהן בין שלא עשו ועשה הרי זה פטור מפני שתלה בבית דין הורו בית דין וידע אחד מהן שטעו או תלמיד שהוא ראוי להורייה והלך ועשה על פיהם בין שעשו ועשה עמהם בין שעשו ועשה אחריהם בין שלא עשו ועשה הרי זה חייב מפני שלא תלה בבית דין זה הכלל התולה בעצמו חייב והתולה בבית דין פטור:
From when may one recite Shema in the evening? From the time the Kohanim go in to eat their Terumah (produce consecrated for priestly consumption). Until the end of the first watch, says Rabbi Eliezer. And the Sages say: Until [astronomical] midnight. Rabban Gamliel says: Until the break of dawn. It once happened that his [Rabban Gamliel’s] sons came from a house of feasting. They said to him: We have not recited Shema. He to them: If dawn has not broken, you are obligated to recite it. And it is not only in this case that they said it! Rather, in all cases where the Sages said "only until midnight," the obligation remains until the break of dawn. [e.g.] Burning the fats and limbs [of the sacrifices, on the Temple altar] — the obligation is until the break of dawn. [e.g.:] All [sacrifices] which may be eaten for one day — the obligation is until the break of dawn. If that is so, why did the Sages say, "until midnight?" To distance a person from transgression.
Sifra
1) kal vachomer (a fortiori). 2) gezeirah shavah (Identity). 3a) Binyan av vekathuv echad (a general rule implicit in one verse). 3b) binyan av mishnei kethuvim (a general rule derived from two verses). 4) kllal ufrat (general-specific). 5) prat ukllal (specific-general). 6) kllal ufrat ukllal (general-specific-general). 7) kllal shehu tzarich lifrat ufrat shehu tzarich lichllal (general requiring specific and specific requiring general). 8) kol davar shehaya bichllal veyatza min hakllal lelamed, lo lelamed al atzmo yatza ela lelamed al hakllal kulo yatza. (Anything which was subsumed in a general category, and departed from that category to teach (something) — not in order to teach about itself did it depart, but in order to teach about the entire category did it depart). 9) kol davar shehaya bichllal veyatza min hakllal lit'on to'an acher shehu ke'inyano, yatza lehakel velo lehachmir. (Anything which was subsumed in a general category, and departed from that category for a particular requirement thereof, departed for leniency and not for stringency). 10) kol davar shehaya bichllal veyatza min hakllal lit'on to'an acher shelo ke'inyano, yatza lehakel ulehachmir. (Anything which was subsumed in a general category, and departed from that category for a particular requirement foreign to it, departed both for leniency and for stringency). 11) kol davar shehaya bichllal veyatza min hakllal lidon badavar hechadash, ē ata yachol lehachziro lichllalo ad sheyachzirenu hakathuv lichlallo befeirush. (Anything which was subsumed in a general category, and departed from that category for a new learning, cannot be restored to that category unless Scripture restores it explicitly). 12a) davar halamed me'inyano (something learned from context). 12b) davar halamed misofo (something learned from its end). 13) shnei kethuvim hamakchishim zeh eth zeh ad sheyavo hakathuv hashlishi veyachriya beneihem (two verses that contradict each other until a third verse comes and resolves the contradiction).
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