答:这一件只可比那一件——鸟落在红母牛身上,那牛仍合式(那算不得负轭);公牛骑上去与它交配,便不合式。赶牛进栏而它踹了谷也是一样:主人于那一举本无所求,便如同鸟落在牛身上,那牛仍合式。问:鸟落与公牛骑上,分别何在?
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革玛拉答。
The Gemara answers.
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这一件只可比那一件:鸟落在红母牛身上,那牛仍是合式的,因那算不得负轭。
This case is comparable only to that other case: If a bird landed on the red heifer it remains valid, since this is not considered to be like bearing a yoke.
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公牛骑上去要与它交配的,那牛便不合式,不可用以行礼。
If a male animal mounted it to mate with it, it is unfit and may not be used for the ritual.
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这一件也是一样:主人把那牛赶进栏里而它踹了谷,主人于那一举本无所求,便如同鸟落在牛身上,那牛仍是合式的。
The same applies in this case: When the owner moves the heifer into a pen and it threshes, since the owner is uninterested in this action, it is like the case of the bird and the heifer remains valid.
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革玛拉问:鸟落在它身上与公牛骑上去要与它交配,这两样的分别何在?
The Gemara asks: What is the reason for the difference between the case where a bird lands on it and where a male animal attempts to mate with it?