(Mishnah): The more a woman checks herself, the better. If a man does so (puts his hand to his Ever to check himself), his hand should be cut off!

If a Kohenes is deaf, insane, blind or went crazy, healthy women check and immerse her, and she eats Terumah.

Benos Yisrael prepare two cloths for Bedikos after Bi'ah - one for him (perhaps she saw blood and it came on his Ever), and one for her;

Tzenu'os (very pious women) prepare a third cloth to check themselves beforehand.

(Gemara): Our Mishnah the more one puts his hand on his eye, it sheds more tears. (The more one puts his hand on his Ever, he will have more emissions.)

R. Tarfon says, it should be cut off on his navel.

Chachamim (to R. Tarfon): [If so,] his stomach will split!

R. Tarfon: Therefore, I said that his death (to cut his hand there and split his stomach) is better than his life (if he will touch there! We explained this like RIDVAZ.)

Talmidim: R. Tarfon cursed him for touching his body.

R. Yosi: R. Tarfon [did not literally mean to cut it off on his navel. Rather, he] comes only to teach that one may not put his hand below his navel. (BECHOR SHOR, 13a - the Rambam explains that one should not do so, but it is not an absolute Isur. The Rif and Rosh explain that it is Midas Chasidus. Tosfos explains that R. Tarfon refers to touching the Ever.)

Limitation: This is regarding semen, but regarding Zivah, one who checks more [to know how many emissions he had, to know whether or not he must bring a Korban] is better than his colleague who checks less. (Since Zov comes without an erection, he must check to know whether or not he saw Zov, even if it will cause emissions - TOSFOS HA'ROSH 13a, ME'IRI 11b. Mishnah Acharonah - if one is already a Zav, touching the Ever is not prone to cause more emissions.)

Tzenu'os check after every barrel and after every loaf.

A case occurred in which Tavisah, R. Gamliel's Shifchah, was transporting wine for Nesachim, and she checked after every barrel. She said to him, 'Rebbi, I saw a stain!' R. Gamliel was agitated (he thought that she was Metamei all his wine);

She told him, I checked after every barrel. I became Tamei only on this barrel (while carrying the last barrel).

(In the name of R. Yanai): [In the correct text of our Mishnah] it does not say 'Suma' (a blind Kohenes). This was accepted (the Bnei Yeshivah did not disagree). They said in the name of R. Chaninah, [our Mishnah] does not say 'Suma'. This was accepted. (We explained this like KIKAR LA'ADEN.)

(R Ila citing R. Yosi bar Chaninah citing Beis R. Yanai): It does not say 'Suma'.