Local Customs Halachickaly bind

Hence the fourteenth of Nissan is forbidden regarding the doing of work by the words of the Scribes (rabbinically), like the intermediate days of a festival. However it is less stringent than the intermediate days of a festival. And it is only forbidden regarding work from half of the day and onward—which is the time of the slaughter. But from sunrise until midday is dependent on [local] custom: In a place where they are accustomed to do [work], we may do [it]; in a place where they are not accustomed to do [work], we may not do [it].

If one hired laborers and told them to work early or to work late, he has no right to compel them to do so where the custom is not to work early or not to work late. In a place where the custom is to give them their food he should give it to them, and where the custom is to provide them with sweet food, he must give it to them. Everything should follow local custom. It once happened that Rabbi Yochanan ben Mattia said to his son: “Go and hire laborers for us”. He went and struck a deal to provide them with food. When he came to his father, his father said to him, “My son, even if you make them a banquet like Solomon’s in his time you will not have fulfilled your obligation to them. For they are sons of Abraham, Isaac and Jacob. But, rather, before they begin to work go and say to them, “On condition that I am not bound to give you more than bread and beans only.” Rabban Shimon ben Gamaliel says: “It was not necessary to speak thus, for everything should follow local use.”

A woman may not clothe herself in men's clothing, e.g. put on her head a mitre or helment, or wear armor, and so on (Rama: from that which men wear in accordance with the local custom (Tur)) or shave her head like a man. A man may not clothe himself in the clothes of a women, e.g. wear colored clothing or golden ornaments in a place where only women wear those things. (Rama: Even wearing just one of the garments is forbidden, even if it is apparent by his other garments that this is a man or a woman (Beis Yosef).) A tumtum and an androgynos are forbidden to dress like women.

In the first chapter of Keritot, we have the text (Keritot 5b): Rabbah said, "That person that wants to know whether he will take out the year or not, should bring a candle during the ten days between Rosh Hashanah and Yom Kippur into a room where the wind is not blowing. If its light (its flame) continues, he will know that he will continue the year. And a person that wants to conduct a business deal and wants to know if the deal will be a successful one or not, should feed a chicken. If it becomes nicely fat, he will know that it will be successful... Abbaye said,"Now that you have said that a sign is a [correct] matter, a man should accustom himself to eating citron, squash, beans (rubia), leeks (karti), beets (silkei) and dates (tamrei) on Rosh Hashanah." Rashi explains that rubia is clover. Rubia - our merits should increase (yirbu); karti - (the enemies) should be cut off (yikaretu), etc.; silkei - removed (yistalku), etc.; tamrei finished (yitamu), etc.; squash because it is quick to grow. And from this grew the [various] customs, every place according to its custom; as in Germany, where they are accustomed to eating sweet apple with honey at the beginning of the meal, to say, "Let this new year be sweet for us." And in Provence they are accustomed to bring all types of novelties [to the meal] and to eat a sheep's head and lung, to say, "Let us be at the head and not at the tail;" and the lung because it is light. And our teacher, Rabbi Meir of Rothenberg was accustomed to eat the head of a ram to commemorate the ram of Yitzchak.

Ameimar says: The laknei and batnei birds are permitted. As for the sakna’ei and batna’ei birds, in any place that it is customary to eat them, one may eat them; in any place that it is customary not to eat them, one may not eat them. The Gemara asks: Is that to say that the matter of whether it is permitted depends on custom? The Gemara responds: Yes, but it is not difficult: This place where they are forbidden is a place where the peres and ozniyya are found. Since they are similar to these birds, one must be concerned that people will confuse them, even though the sakna’ei and batna’ei are themselves kosher. That place where they are permitted is a place where the peres and ozniyya are not found.

MISHNA: With regard to one who hires laborers and tells them to rise exceptionally early and to continue working until exceptionally late, if this is in a locale where laborers are not accustomed to rising so early or to continuing to work until so late, the employer is not permitted to compel them to do so. In a locale where employers are accustomed to feeding their laborers, the employer must feed them. If they are in a locale where an employer is accustomed to providing their laborers with sweet foods, he must provide such food. Everything is in accordance with the regional custom in these matters.

MISHNA: Apropos different local customs discussed in the first mishna in this chapter, this mishna discusses various halakhot with regard to which there are different customs. In a place where the people were accustomed to sell small livestock to gentiles, one may sell them. In a place where the people were not accustomed to sell them due to certain concerns and decrees, one may not sell them. However, in every place, one may sell to gentiles neither large livestock, e.g., cows and camels, nor calves or foals, whether these animals are whole or damaged. The Sages prohibited those sales due to the concern lest the transaction be voided or one side reconsider, creating retroactively a situation where a Jew’s animal performed labor for the gentile on Shabbat in violation of an explicit Torah prohibition. Rabbi Yehuda permits the sale of a damaged animal because it is incapable of performing labor. Ben Beteira permits the sale of a horse for riding, because riding a horse on Shabbat is not prohibited by Torah law.

One who goes from a place where they do [work] to a place where they do not do [it] should not do [work] in the town [so as not to cause] disagreement. But the may do [it] in a wilderness [adjacent to it]. However one who goes from a place where they not do [work] to a place where they do [it] should not do [work at all]. We place upon one [both] the stringincies of the place from which one came and the stringincies of the place to which one went. And nevertheless he should not appear as if he is idle on account of the prohibition. [That is because] one should never deviate [from local custom, so as not to cause] disagreement. And likewise one who has in mind to return to his place should act like the people of his place—whether to be lenient or to be stringent. And this is so long as he does not appear as one who [is acting differently than the custom of place he is in] in front of the people of the place [so as not to cause] disagreement.

Rav said: On account of four matters the property of homeowners is confiscated by the state treasury [timyon]: On account of those who delay payment of the salary of hired laborers (see Leviticus 19:13; Deuteronomy 24:15); on account of those who withhold the salary of hired laborers and do not pay at all; and on account of those who throw off the yoke of communal responsibility from their own necks and place that yoke on the necks of their friends; and on account of the arrogance of those who, due to their wealth, exercise power over the community. And the punishment for arrogance is equal to them all. However, with regard to the humble it is written: “The humble will inherit the land and delight themselves in the abundance of peace” (Psalms 37:11).