Mishnah Zavim 2

הכל מיטמאין בזיבה. אף הגרים. אף העבדים. בין משוחררין. בין שאינן משוחררין. חרש שוטה. וקטן. סריס אדם. סריס חמה. טומטום ואנדרוגינוס נותנין עליהן חומרי האיש. וחומרי האשה. מטמאין בדם כאשה. ובלובן כאיש. וטומאתן בספק:

All persons become unclean through zivah, even converts, even slaves whether freed or not, a deaf-mute, a person of unsound senses, and a minor, a eunuch whether [he had been castrated] by man, or was a eunuch from [the time of seeing] the sun. With regard to a tumtum and an androgynous [person], they place upon him the stringencies for a man and the stringencies for a woman: they defile through blood like a woman, and through eggy [substance] like a man. Their uncleanness still remains in doubt.

בשבעה דרכים בודקין את הזב. עד שלא נזקק לזיבה. במאכל. במשתה. ובמשא. בקפיצה. בחולי. ובמראה. ובהרהור. הרהר עד שלא ראה. או שראה עד שלא הרהר. רבי יהודה אומר אפילו ראה בהמה חיה ועוף מתעסקין זה עם זה. אפילו ראה בגדי צבע האשה. ר' עקיבא אומר אפילו אכל כל מאכל. בין רע בין יפה. ושתה כל משקה. אמרו לו אין כאן זבין מעתה. אמר להם. אין אחריות זבים עליכם. משנזקק לזיבה. אין בודקין אותו. אונסו. וספיקו. ושכבת זרעו טמאים. שרגלים לדבר. ראה ראיה ראשונה. בודקין אותו. בשניה בודקין אותו. בשלישית. אין בודקין אותו. ר' אליעזר אומר אף בשלישית בודקין אותו. מפני הקרבן:

There are seven ways in which a zav is examined as long as he had not become subject to zivah: With regard to food, drink, as [to what] he had carried, whether he had jumped, whether he had been ill, what he had seen, or what he had thought. [It doesn't matter] whether he had thoughts before seeing [a woman], or whether he had seen [a woman] before his thoughts. Rabbi Judah says: even if he had watched beasts, wild animals or birds having intercourse with each other, and even when he had seen a woman's dyed garments. Rabbi Akiva says: even if he had eaten any kind of food, be it good or bad, or had drunk any kind of liquid. They said to him: Then there will be no zavim in the world!’ He replied to them: you are not held responsible for the existence of zavim!’ Once he had become subject to zivah, no further examination takes place. [Zov] resulting from an accident, or that was at all doubtful, or an issue of semen, these are unclean, since there are grounds for the assumption [that it is zivah]. If he had at a first [issue] they examine him; On the second [issue] they examine him, but on the third [issue] they don't examine him. Rabbi Eliezer says: even on the third [issue] they examine him because of the sacrifice.

הרואה קרי אינו מטמא בזיבה. מעת לעת. רבי יוסי אומר יומו. עכו"ם שראה קרי ונתגייר. מיד הוא מיטמא בזיבה. הרואה דם והמקשה מעת לעת. והמכה את עבדו. יום יומים. מעת לעת. כלב שאכל בשר המת. שלשה ימים מעת לעת. הרי הוא כברייתו:

One who had [a discharge of] semen does not defile due to zivah for a period of twenty-four hours. Rabbi Yose says: [only] that day. A non-Jew who had a discharge of semen and then converted, he immediately becomes unclean due to zivah. [A woman] who had [an issue] of blood, or had experienced difficulty [in childbirth], [the time prescribed] is twenty-four hours. One who strikes his slave, the "day or two" is twenty-four hours. A dog that eats a corpse's flesh, for three days from one time of day to the same time of day, it is considered to be in its natural state.

הזב מטמא את המשכב בחמש דרכים. לטמא אדם. לטמא בגדים. עומד. יושב. שוכב. נתלה. ונשען. והמשכב מטמא את האדם בשבעה דרכים לטמא בגדים. עומד. יושב. שוכב. נתלה. ונשען. במגע. ובמשא:

A zav defiles the objects that are lain upon (or sat upon) in five ways, so that they defile people and garments: by standing, sitting, lying, hanging or leaning. What he lies upon defiles a person in seven ways, so that he [in turn] defiles garments: by standing, sitting, lying, hanging, or leaning upon it, or by touching or carrying it.