Bava Metzia 59a: Rav said: Whoever follows his wife’s advice falls into Gehinom, as we see in the case of Korach. Rav Papa asked Abaye: But people say, “If your wife is short, lean over and whisper to her!” The answer is: listen to her in worldly matters, not in heavenly matters.
בבא מציעא נט ע”א: ואמר רב: כל ההולך בעצת אשתו נופל בגיהנם, שנאמר (מלכים א׳ כ״א) רק לא היה כאחאב וגו׳. ־ אמר ליה רב פפא לאביי: והא אמרי אינשי: איתתך גוצא גחין ותלחוש להִ ־ לא קשיא, הא ־ במילי דעלמא, והא ־ במילי דביתא. לישנא אחרינא: הא ־ במילי דשמיא, והא ־ במילי דעלמא.
Rabbi Yisroel Salanter’s disciples noticed that he often made decisions in his household without consulting his wife. “How can the rebbe go against an explicit Gemara, which says that in worldly matters one must listen to his wife?” they asked. “Ah,” he replied, “for me, everything is a heavenly matter!”
As an example of a worldly matter which is actually a heavenly matter, a story about Rabbi Yehoshua Leib Diskin comes to mind. One day, his wife bought some heavy items in the marketplace. That evening, Reb Yehoshua Leib looked up from his sefer and noticed the bags, and realized that his wife must have hired a porter to carry it home for her. “How much did you pay the porter?” he asked. She told him, and he said, “For such a heavy load he deserves more!” He took the extra money from his wallet and dispatched one of his children to find the porter and pay him, urging him to find him that same night to fulfill the mitzvah of ביומו תתן שכרו (paying a worker’s wages on the same day) and לא תלין (the worker’s wages may not stay with the employer overnight).
The rebbetzin was surprised and said, “But he accepted the money I gave him, thanked me and did not argue at all. And besides, you are sitting and learning Torah day and night – you don’t do business or hire workers, so how do you know what the appropriate pay is for a job like this?”
The rav smiled and replied, “The Torah already speaks about this. If someone consecrates a donkey or a camel to the Beis Hamikdash, he brings it before the kohein, and the kohein appraises its value (Vayikra 27:12). Hekdesh then sells it for whatever price the kohein chooses. Similarly, if he consecrates his house, the kohein appraises it (posuk 14). Now, this kohein is serving in the Beis Hamikdash and learning Torah. What does he know about the world of commerce? The answer is that when it makes a difference for halachic purposes, Hashem grants the posek heavenly assistance to know what he needs to know, and not make a mistake.”
Source: Mayim Chaim pp. 152-153
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