Ketubot 61A

בריי. דאכלה ביעי ⁠— הוו לה בני עינני. דאכלה כוורי ⁠— הוו לה בני חינני. דאכלה כרפסא ⁠— הוו לה בני זיותני. דאכלה כוסברתא ⁠— הוו לה בני בישרני. דאכלה אתרוגא ⁠— הוו לה בני ריחני. ברתיה דשבור מלכא אכלה בה אמה אתרוגא, והוו מסקי לה לקמיה אבוה בריש ריחני.

healthy; one who eats eggs will have large-eyed children; one who eats fish will have graceful children; one who eats celery will have beautiful children; one who eats coriander [kusbarta] will have corpulent children; and one who eats etrogim will have sweet-smelling children. It is related with regard to the daughter of King Shapur of Persia, that her mother ate etrogim while pregnant with her and they used to place her in front of her father on top of all the spices, as she was so fragrant.

אמר רב הונא, בדק לן רב הונא בר חיננא: היא אומרת להניק, והוא אומר שלא להניק ⁠— שומעין לה. צערא דידה הוא. הוא אומר להניק, והיא אומרת שלא להניק, מהו? כל היכא דלאו אורחה ⁠— שומעין לה. היא אורחה והוא לאו אורחיה, מאי? בתר דידיה אזלינן, או בתר דידה אזלינן?

§ Rav Huna said: Rav Huna bar Ḥinnana tested us, by asking: If she says that she wants to nurse and he says that he does not want her to nurse but rather to give the child to a wet nurse, we accede to her desires, as she is the one suffering from engorgement of her breasts. However, if he says that he wants her to nurse and she says that she does not want to nurse, what is the halakha? He then narrowed the scope of the question: Anywhere that she is not accustomed, as the women of her family generally do not nurse their children but give them to wet nurses instead, we accede to her desires. However, if she is accustomed to nursing and he is not accustomed, i.e., the women of her family generally nurse their babies but the women in his family do not, what is the halakha: Do we follow his wishes to follow her family custom or do we follow her wishes to follow his family custom?