It is well known Esav sold his 'birthright' to Yaakov. Can a father decide arbitrarily which son he wants to favor as his bachor? If so -under what conditions?
I've heard that some men fast on erev Pesach for their firstborn son until that son old enough to fast for himself. Is that halakha? Where does this come from?
I'm interested in the question of whether a ger who is firstborn (of both parents, say, to keep things simple) must follow the rules for Ta'anit B'khorot. There are some remarks on the wikipedia page, ...
When the first Seder falls on Motzei Shabbas, Ta'anit Bechorot is pushed back to Thursday. Why does it stay on Friday when Pesach falls out on Shabbas?
From what I understand, the laws of "bechor behemah tehorah" (kosher first-born animal) are still in effect today, both in Israel and outside. To avoid problems with this, we sell a share of the ...