Mishnà su Deuteronomio 22:11

One who takes a vow not to have intercourse with his wife: Beth Shammai says: [after] two weeks [he must divorce her and pay her kethubah], And Beth Hillel say: after one week. A woman has a miscarriage on the eve of the eighty first [day]: Beth Shammai exempt her from bringing the offering, And Beth Hillel do not exempt her. [With regards to the rules of] tzitzit (fringes) on linen sheet: Beth Shammai exempts, And Beth Hillel does not exempt. A basket of [fruit set aside for] the Sabbath: Beth Shammai exempts it [from tithes]. And Beth Hillel does not exempt it.

Only that which is spun or woven is forbidden under the law of kilayim, as it says, “You shall not wear shatnez” (Deuteronomy 22:1, that which is shua (combed) tavui (spun) and nuz (woven). Rabbi Shimon ben Elazar says: [the word shaatnez means that] he [the transgressor] is perverted (naloz) and causes his father in heaven to avert himself [from him].