Study Bava Batra folio 142B with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
The reason is that we presume that the fetus died first, before its mother died, and the son does not inherit from his mother while in the grave, in order to bequeath the inheritance to his paternal brothers. The halakha is that if a son dies, and afterward his mother dies, the deceased son does
The Talmud asks: Is this to say that it is certain that the fetus died first? But there was an incident where the mother died and the fetus made 3 spasmodic motions afterward. Apparently, a fetus can die after the mother. Mar bar Rav Ashi said: That incident was just as it is with the tail of the l
Mar, son of Rav Yosef, says in the name of Rava: The Mishnah comes to say that a one-day-old child reduces the portion of the firstborn. The firstborn is entitled to a double portion of the inheritance, and this is calculated taking into account the portion due to his dead brother. And it is in th
This is similar to another halakha, as Mar, son of Rav Yosef, says in the name of Rava: A son who was born after his father’s death does not reduce the firstborn’s portion. What is the reason for this? God states in the Torah: “And they bore him children,” and this term “children” does not apply to
The Talmud notes: In Sura they taught Mar’s statement that way, but in Pumbedita they taught it this way: Mar, son of Rav Yosef, says in the name of Rava: A firstborn who was born after his father’s death does not receive a double portion. What is the reason for this? God states in the Torah: “But h