Related על יבמות 225:3

A Gentile that separates the terumah of his friends (חבריו not חברים per the GR"A), or of a Jew, even with permission, his terumah is not [valid] terumah (Ter. 1:1). It so happened in Pinah (alt. "in Pigah" =בפיגא), that a certain Jew said to a Gentile, "Separate the terumah of my threshing floor." And he separated the terumah, and [subseqently] the terumah fell back onto the threshing floor [becoming mixed with the rest of the produce]. And this matter came before Rabban Gamaliel (alt., "Shimon ben Gamaliel") and he said, "Since the Gentile separated the terumah, it is not [valid] terumah," [and thus the resulting mixture is not forbidden]. Rabbi Yitzhak says, a Gentile that separates the terumah of a Jew, and the owners [of the produce] remain near him [throughout the process], his terumah is [valid] terumah.

A k'vi (see Bikkurim 2:8) -- how is it like a wild animal? Its blood requires covering like a wild animal. Rabbi Eliezer says, they are liable to bring a variable guilt-offering for [partaking in] their [forbidden] fats. How is it like both a wild animal and a domesticated animal? One who flays (המפשיט not מפסיד, see GR"A) it, [the laws regarding whether its hide is] connected [to its flesh is] like wild animals and domesticated animals (see Tos. Chullin 8:6). And [the laws of] the sciatic nerve apply to it, like they do to wild animals and domesticated animals. If he said, "Behold, I will become a nazirite if [the k'vi] is [neither] a wild animal or a domesticated animal," behold, he has become a nazirite. Rabbi Yosei says, a k'vi is a unique creation unto itself, and the Sages were unable to render a decision about it, if it it is a wild animal or a domesticated animal.

A wife's ketubah [is collected by her] from the worst property—words of Rabbi Yehudah. Rabbi Shimon says: Why did they say that a wife's ketubah [is collected] from the worst property? [Because] more than a man wants to marry, a woman wants to be married. Furthermore, a woman's shame is greater than that of a man. If so, she shouldn't have a ketubah at all! Rather, [it is because] a wife is divorced willingly or unwillingly, but a man only divorces willingly.