Moed Katan 10B

אבל חמרא דריחיא ⁠— לא.

However, with regard to the hooves of a donkey that turns the millstones, no, they may not be trimmed. This is unnecessary on the intermediate days of a Festival, as one may only grind grain that one needs to use on the Festival itself, and the donkey can perform this task even if its hooves are not trimmed.

רב יהודה שרי למישקל טופריה לחמרא דריחיא, ולאוקומי ריחיא, ולמיבני ריחיא, ולמיבני אמת ריחיא, ולמיבני אוריא. רבא שרא לסרוקי סוסיא, ולמיבני אקרפיטא, ולמיבני איצטבא.

Rav Yehuda permits one to trim the hooves of the donkey that turns a mill, to set the stones of a mill in their place, to build the base of a mill, to construct a water channel to carry water that drives a mill, and to build a stable for horses on the intermediate days of a Festival. Rava permitted one to groom a horse, to build a trough, and to build a bench on the intermediate days of a Festival.

רבא שרא למישקל דמא לבהמה בחולא דמועדא. אמר ליה אביי, תניא דמסייע לך: מקיזין דם לבהמה, ואין מונעין רפואה לבהמה בחולו של מועד.

Rava also permitted one to let the blood of an animal for medical purposes on the intermediate days of a Festival. Abaye said to him: A baraita is taught that supports you: One may let blood from an animal, and one does not withhold any medical treatment from an animal on the intermediate days of a Festival.

רבא שרא לכסכוסי קירמי. מאי טעמא ⁠— מעשה הדיוט הוא. אמר רב יצחק בר אמי אמר רב חסדא: קיטורי בירי ⁠— אסיר. מאי טעמא ⁠— מעשה אומן הוא.

Rava further permitted one to scrub garments as part of the laundry process. What is the reason? It is the work of a layman and not the work of a craftsman, which is prohibited on the intermediate days of a Festival. Rav Yitzḥak bar Ami said that Rav Ḥisda said: Tying sleeves to create pleats is prohibited. What is the reason? It is the work of a craftsman and is consequently prohibited on the intermediate days of a Festival.