Bava Batra 13A

חד גיסא נגרא וחד גיסא נהרא ⁠– פלגין לה בקרנא זול.

If there is a water channel on one side of the field and a river on the other side, the field is divided diagonally [bekarna zol] between the two brothers, so that they each receive land adjoining both the river and the water channel.

ולא את הטרקלין כו׳. אין בהן כדי לזה וכדי לזה, מהו? רב יהודה אמר: אית דינא ד״גוד, או אגוד״. רב נחמן אמר: לית דינא ד״גוד, או אגוד״.

§ The Mishnah teaches that a hall, a drawing room, and the like should not be divided unless the two parties will be able to use their respective portions in the same manner that they had previously used them. The Talmud asks: What is the halakha if there is not enough for this one and that one? What is to be done if one of the parties wishes to dissolve the partnership? Rav Yehuda said: There is a halakha of: Either you set a price or I will set a price. That is to say, one party can say to the other: Set a price you are willing to pay for my share, and I will sell my share to you or purchase your share from you at that price. Rav Naḥman said: There is no halakha of: Either you set a price or I will set a price; rather, the partnership continues.

אמר ליה רבא לרב נחמן: לדידך דאמרת לית דינא ד״גוד או אגוד״, בכור ופשוט שהניח להן אביהן עבד ובהמה טמאה, כיצד עושין? אמר ליה, שאני אומר: עובד לזה יום אחד, ולזה שני ימים.

Rava said to Rav Naḥman: According to you who say that there is no halakha of: Either you set a price or I will set a price, what should they do if there was a firstborn son and an ordinary brother whose father left them a slave and a non-kosher animal as an inheritance? How are they to be divided? Rav Naḥman said to him: I say that they work for this one, the ordinary brother, one day, and for the other one, the firstborn, two days.