Study Nedarim folio 52B with parallel Hebrew-English text, traditional commentary, and modern study tools. Free access to Babylonian Talmud online.
Talmud: The Mishnah cited a dispute between R' Yosei and the Rabbis, in which R' Yosei ruled that one who vows that milk is forbidden to him is prohibited from eating whey as well. And the Talmud raises a contradiction between this ruling and R' Yosei’s opinion in a later Mishnah (53b): One who vow
The Talmud answers: This is not difficult. The opinion of this Sage is in accordance with the custom of his locale, and the opinion of that Sage in accordance with the custom of his locale. In the Rabbis’ locale they call milk, milk and whey, whey, whereas in R' Yosei’s locale they also call whey,
It is taught in a baraita: One who vows that milk is forbidden to him is permitted to partake of whey. One who vows that whey is forbidden to him is permitted to partake of milk. One who vows that milk is forbidden to him is permitted to eat cheese. One who vows that cheese is forbidden to him is
One who vows: Wine is forbidden to me, is permitted to eat a cooked dish that has the flavor of wine. However, if he said: This wine is konam for me, and for that reason I will not taste it, and the wine fell into a cooked dish, if the dish contains an amount of the wine that gives it flavor, it is
Mishnah: One who vows that grapes are forbidden to him is permitted to partake of wine. One who vows that olives are forbidden to him is permitted to partake of oil. However, if one said: Olives and grapes are konam for me, and for that reason I will not taste these items, he is prohibited from t