It Looks Like Shabbos
One Shabbos, a woman was at her wit’s end when her baby refused to nurse. Looking for guidance, she went to see the Rogochover Gaon. The Rogochover looked up from his sefer and told her not to worry, “It’s a Yeushalmi.” He then continued learning. Somewhat relieved but totally perplexed, she exited the Gaon’s house. She met Rebbe Chizkiyahu Yosef Meishekovsky in the street and told him what transpired. He told her that he was on his way to the house of Rebbe Meir Simcha and suggested that she come along. She told Rebbe Meir Simcha about the Rogochover’s strange comment. At which point, Rebbe Meir Simcha asked her, “Do you wear a sheitel all week or only on Shabbos?” She said that she only wears a sheitel on Shabbos. She likewise stated that she only wears her jewelry on Shabbos as well. Rebbe Meir Simcha told the mother, “Your baby is bothered by your altered appearance. Remove your jewelry and wig, and the baby will nurse.” The relieved mother went home, followed the directions, and her baby nursed.
Rebbe Meir Simcha then commented to Rebbe Meishekovsky that the Yerushalmi the Gaon is referring to is found in Tosfos Bava Kama (37a). The Mishna states that there can be an ox which only has a propensity to gore on Shabbos. The result would be that the owner of the ox would have to pay more in damages if it gores on Shabbos. Rashi explains that a Jewish-owned ox may be more likely to gore on Shabbos, because it has a day off. Yidden are prohibited from having their animals perform labor on Shabbos. Tosfos, though, quotes a Yerushalmi that the ox may be more likely to gore on Shabbos because everyone appears to be a stranger since they are all wearing their Shabbos clothing in the street. This is the Yerushalmi the Rogochover was referring to. Just like the townspeople in the eyes of the animal, the mother in her wig and Shabbos jewelry may appear to be a stranger to her baby. That would explain why specifically on Shabbos the baby refused to nurse.