Mishná sobre Números 19:19

Rabbi Yose says: there are six instances of lenient rulings by Beth Shammai and stringent rulings by Beth Hillel.A fowl may be put on a table [together] with cheese but may not be eaten [with it], according to the opinion of Beth Shammai. But Beth Hillel says: it may neither be put on [the table together with it] nor eaten [with it]. Olives may be given as terumah for oil and grapes for wine, according to the opinion of Beth Shammai. But Beth Hillel says: they may not be given. One who sows seed [within] four cubits of a vineyard: Beth Shammai says: he has caused one row [of vines] to be prohibited. But Beth Hillel says: he has caused two rows to be prohibited. Flour paste [flour that had been mixed with boiling water]: Beth Shammai exempts [from the law of hallah]; But Beth Hillel pronounces it liable. One may immerse oneself in a rain-torrent, according to the opinion of Beth Shammai; But Beth Hillel say: one may not immerse oneself [therein]. One who became a proselyte on the eve of Passover: Beth Shammai says: he may immerse himself and eat his Passover sacrifice in the evening. But Beth Hillel says: one who separates himself from uncircumcision is as one who separates himself from the grave.