8

The Rambam (Hil. Bikkurim 12:1) writes: מצות עשה לפדות כל אדם מישראל פטר חמור בשה ואם לא רצה לפדותו מצות עשה לעורפו שנאמר ופטר חמור תפדה בשה ואם לא תפדה וערפתו ושתי מצות אלו נוהגות בכל מקום ובכל זמן ומצות פדייה קודמת למצות עריפה: It is a positive commandment for every Jewish man to redeem the first [male] issue of a donkey with a seh. If he does not desire ...


8

Mishna Bekhorot 1:7 מצות פדייה קודמת למצות עריפה, שנאמר "אם לא תפדה וערפתו"‏ The Mitzva of redeeming precedes the Mitzva of [killing], as it says "And if you don't redeem is, [kill] it". So the owner could choose to kill it, but that's not what he's supposed to do. This is actually just like Yibbum, as the Mishna continues to explain, at least in ...


7

Due to Egyptian immorality, there were actually a lot of firstborns. All of these were counted: Firstborn of the mother Firstborn of the father Male Female Oldest in the house, even if not a firstborn All Egyptian firstborns, even in other countries Firstborns of other nationalities currently in Egypt Rashi to Ex. 12:30, s.v. כי אין בית אשר אין שם מת and ...


6

The "birthright" as used here that went to Yoseph is the "double portion". The Artscroll commentary on Reuven cites Targum Yonasan as pointing out that there were three items that had been originally given to the first born. Rashi says: you do not deserve to serve in the superior positions that were designated for you. Targum Yonatan says: But ...


6

If a father says "my bechor will not take double" or says "he will inherit like a regular son" it is invalid. It violates the commandment of not diverting inheritance Devarim 21:16 If the son agrees to give up his portion some permit it. Nesivos 281:6 See pischei choshen hilchos yerushah 4:6-8 for a complete discussion . A firstborn's portion is ...


5

The verses strongly indicate that not only did Avraham not give a double portion to Yishmael, he gave (basically) everything to Yitshak. For example, right before stating that Avraham died, Genesis (25:5) states that he gave all of his possessions to Yitshak: וַיִּתֵּ֧ן אַבְרָהָ֛ם אֶת־כָּל־אֲשֶׁר־ל֖וֹ לְיִצְחָֽק And Avraham gave all he had to ...


5

The Talmud (Ketubot 103a) states: כבד את אביך ואת אמך את אביך זו אשת אביך ואת אמך זו בעל אמך וי"ו יתירה לרבות את אחיך הגדול Honor your father [et avikha] and your mother [ve’et immekha]. The preposition et in the phrase: Your father; this teaches that you must honor your father’s wife. Similarly, the preposition et in the phrase: And your mother; ...


5

The source for this is derasha in the Talmud (Ketubot 103a): כבד את אביך ואת אמך את אביך זו אשת אביך ואת אמך זו בעל אמך וי"ו יתירה לרבות את אחיך הגדול Honor your father [et avikha] and your mother [ve’et immekha]. The preposition et in the phrase: Your father; this teaches that you must honor your father’s wife. Similarly, the preposition et in the ...


5

It depends what relevance of the term "BECHOR" you are asking about: If you mean BECHOR for Pidyon Haben, redemption of the firstborn son, the father does not have to redeem his son, even though the child is born from a forbidden union. (see Shulchan Aruch YD 305:19). Anyway there would be no pidyon haben because pidyon haben is only for the MOTHER'S ...


5

There is a very interesting 4-volume set of seforim called Nishmas Avraham by Rabbi Dr Avraham-Sofer Avraham which details medical and health based halachos. They are all available on Hebrewbooks.org - Vol, 1, 2, 3 & 4) In the cheilek on Yoreh Deah, siman 305 it details the Laws of Pidyon Haben. It is a very compelling read and explores a number of ...


4

A sick person might be exempt from the fast. R Mansour at dailyhalacha writes Firstborns who are ill or otherwise frail are not required to fast, even if they do not attend a “Se’udat Misva.” R Eliezer Melamed, author of Peninei Halacha writes This fast is less strict than other fasts. All of the other fasts were instituted by the Sages, but Ta’...


4

The Ohr Chaim on Bamidbar 3:45 writes that the firstborn will serve in the Third Temple. שאמרו ז"ל עתידה עבודה שתחזור לבכורות R' Yonathan Eybeschutz writes in Ahavat Yonatan on the haftorah for Emor, that in the future, there will be atonement for the sin of the golden calf, and thus the firstborn will return to temple service. I've seen many who are ...


4

The redemption of every first born child is mandatory as we see in the pesukim that I reference. Shmos Bo 13:13 And every firstborn donkey you shall redeem with a lamb, and if you do not redeem [it], you shall decapitate it, and every firstborn of man among your sons, you shall redeem. Additionally, Bamidbar Korach 18:15 Every first issue of the ...


4

In Emunot V'Deiot 3:9 R. Saadia Gaon explains that prior to the priesthood of Aaron and his sons, there were always specific people appointed to perform sacrificial services: The third [problem is presented by] the fact that God commanded all men to offer up sacrifices and then forbade such activities to everyone except Aaron and his children. But this, too,...


3

The simple explanation of the birth of Peretz and Zerach is that Peretz was born first. After Zerach stretched out his hand the midwife tied a red string on it figuring that he would be the first born. However he put his hand back in and Peretz emerged first. 38:30 וְאַחַר יָצָא אָחִיו אֲשֶׁר עַל יָדוֹ הַשָּׁנִי וַיִּקְרָא שְׁמוֹ זָרַח: Afterwards, his ...


3

The OP asks about attending the siyum and only eating later at a different place and time? The Minchas Yitzchak (vol.9:45) and Rav Elyashav (I heard this from Rav Smith) both say (as do others) that the simchah of the siyum is what releases the fast. Therefore, you may eat later and elsewhere. One idea for this is the Gemara (Shabbos 118) that says when ...


3

Rabbi Henkin, in his book New Interpretations on the Parsha, suggests three possible reasons: Malnourishment as slaves may have lead to a high number of miscarriages. Because Egypt places high prestige on first-borns, perhaps the Jewish first-borns did not want to leave Egypt, and stayed behind/died when the Jews left. If, according to the medrash, the ...


3

From Wikipedia: If a firstborn attending a siyum does not hear the completion of the tractate, or if he does not understand what he hears, or if he is in the shiva period of mourning and is thus forbidden from listening to the Torah material being taught, some authorities rule that subsequent eating would not qualify as a seudat mitzvah and he would ...


3

Rabbi Elazar Mayer Teitz taught on 7 Nissan in 2008 that all other fast days include both an obligation to fast & an obligation not to eat. This means that even if one has eaten for whatever reason, one may not continue eating. Taanit bechorot includes only an obligation to fast. Once one is permitted to eat at a siyum or other seudat mitzvah, one no ...


3

Whether to concider a stillborn as the firstborn or not would depend on the stage of developement of the fetus and other variables, See Shulchan Aruch, Yoreh De'ah 305:22 & 23, with various commentaries and their opinions. But if you are discussing an early term abortion, before the fetus has human form than all would agree that the next child would be ...


3

I attended a pidyon petter chamor in Pittsburgh in 2017. It was organized by the Kollel and attended by many of the local Orthodox rabbis (and lots of other people). Unfortunately the web site they set up at the time is no longer there (and not in the Wayback Machine), but I have a video (linked on my blog post about the event). In the (first, ...


3

Shulchan Aruch Harav (470:5) writes: אם אין לה בעל שיתענה בעד בנו אינה צריכה להתענות אם היא מעוברת או מניקה ויש לה צער מן התענית וכן יולדת כל שלשים יום אף שאין לה צער ומכל מקום אם התענית כבר פעם אחת בעד בנה והיה אז בדעתה לנהוג כן לעולם עד שיגדל בנה הרי תענית זה עליה כנדר וצריך להתירה על ידי שאלה וחרטה If she doesn't have a husband to fast on ...


3

Obviously, he will inherit everything so the halacha of "double" portion does not apply. However, the halacha of pidyon haben (redeeming the first born) does apply as does the custom of fasting on erev Pesach. The halacha as given in the Torah says that pidyon haben is required 30 days after the birth of the bechor. In most cases, a woman will give birth ...


3

In short: R. Tzvi Hirsh of Zidichov is cited as saying that the true Girsa in Masekhet Soferim should read מתענגים instead of מתענים. This doesn't fit with our version of Masekhet Soferim. There is support in the Talmud Yerushalmi for the idea of the firstborn not fasting on 'Erev Pesach. Sefer ha-Tadir has a version of Masekhet Soferim that says fasting is ...


3

According to the Tosefta (Sotah 6:3), he did attempt to claim his inheritance, and that was what prompted Sarah to kick him out (as opposed to the other opinions there, that Yishmael did the three cardinal sins). אלא אין צחוק האמור כאן אלא לענין ירושה שכשנולד אבינו יצחק לאברהם אבינו היו הכל שמחין ואומרין נולד בן לאברהם [נולד בן לאברהם] נוחל את העולם ...


2

wiki If a firstborn attending a siyum does not hear the completion of the tractate, or if he does not understand what he hears, or if he is in the shiva period of mourning and is thus forbidden from listening to the Torah material being taught, some authorities rule that subsequent eating would not qualify as a seudat mitzvah and he would therefore be ...


2

R. Yehuda, expounding on Gen. 25:5, extrapolates from a different verse that Abraham bequeathed the birthright to Isaac (Devarim Rabba, beg. Ch. 11). In Midrash Sekhel Tov (end of Chayei Sara §13) a midrash is recorded saying that בכר (firstborn) is written by Ishmael lacking a vowel to indicate that he did not inherit the birthright.


2

I've read an article (in Russian) that says that according to misrash (not cited which) if Eisav was making all right then 12 tribes were born from both brothers, 6 from Eisav and 6 from Yaakov. Translation of the relevant part: And if Eisav did his job properly, he would retain its status as a descendant of Yitzchak, and the Jewish people, says the ...


2

In addition to the standard answer provided by user4523, I heard an explanation that the custom dates to the time of the Temple, when everyone would visit to bring the pesach-offering. The firstborns would observe the Kohamin serve in the Temple, and realize that if not for the sin of the Golden Calf, it would be the firstborns doing the service. Thus the ...


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