Related for Beitzah 2:8
שְׁלשָׁה דְבָרִים רַבִּי אֶלְעָזָר בֶּן עֲזַרְיָה מַתִּיר, וַחֲכָמִים אוֹסְרִין. פָּרָתוֹ יוֹצְאָה בִרְצוּעָה שֶׁבֵּין קַרְנֶיהָ, וּמְקָרְדִין אֶת הַבְּהֵמָה בְיוֹם טוֹב, וְשׁוֹחֲקִין אֶת הַפִּלְפְּלִין בָּרֵחַיִם שֶׁלָּהֶם. רַבִּי יְהוּדָה אוֹמֵר, אֵין מְקָרְדִין אֶת הַבְּהֵמָה בְיוֹם טוֹב, מִפְּנֵי שֶׁעוֹשֶׂה חַבּוּרָה, אֲבָל מְקַרְצְפִין. וַחֲכָמִים אוֹמְרִים, אֵין מְקָרְדִין, אַף לֹא מְקַרְצְפִין:
Three things are permitted by R. Elazar b. Azaryah and forbidden by the sages: His cow went out (on yom tov) with the [decorative] strap between her horns. And the sages forbid it. [They consider it a burden and not decoration. (It was not the cow of R. Elazar b. Azaryah, but that of his neighbor. Because he did not protest, however, it is called by his name.)] It is permitted to curry an animal on yom tov [with a small-toothed iron comb, even though one makes sores thereby.] And it is permitted to grind peppers in their [small] mill [designed for that purpose]. R. Yehudah says: Currying an animal on yom tov is forbidden, for it makes sores; but combing an animal [with a large-toothed wooden comb, which does not make sores] is permitted. And the sages say: Both currying and combing are forbidden, [combing being decreed against by reason of currying. The halachah is not in accordance with R. Elazar b. Azaryah in (all of) these three things, but only in respect to currying an animal. For he is consistent in this with R. Shimon, who says that "an unintended thing (like making a sore) is permitted." And we rule in accordance with him. The sages who differ with him hold with R. Yehudah that an unintended thing is forbidden. And this is not the halachah.]