Tosefta for Avodah Zarah 10:14

There are four occasions each year when one who sells an animal to his fellow needs to disclose, "I sold the mother [of this animal today] for slaughter" or "I sold the daughter [of this animal today] for slaughter," and they are the following: The evening of the last day of the Festival (i.e., Sukkot), and the evening of the last* day of Passover (*alt., "the first day," see Ab. Zar. 5b:7), and the evening of Shavuot, and the evening of Rosh Hashanah. And according to the words of Rabbi Yosei HaGalili, the evening of Yom Kippur in the Galilee, because it is [also] a holiday. Said Rabbi Yehuda, in what case does this apply? When Yom Kippur falls on a Monday, but if it falls on a Sunday or any other day, there is no need to disclose, because this one (the first buyer) may slaughter it today, and that one (the second buyer) may slaughter it tomorrow.