Yevamot 47B

לא רוב טובה ולא רוב פורענות. ואין מרבין עליו, ואין מדקדקין עליו.

they are not able to receive either an abundance of good nor an abundance of calamities, since the primary place for reward and punishment is in the World-to-Come. And they do not overwhelm him with threats, and they are not exacting with him about the details of the mitzvot.

קיבל ⁠— מלין אותו מיד. נשתיירו בו ציצין המעכבין את המילה ⁠— חוזרים ומלין אותו שניה. נתרפא ⁠— מטבילין אותו מיד. ושני תלמידי חכמים עומדים על גביו ומודיעין אותו מקצת מצות קלות ומקצת מצות חמורות. טבל ועלה ⁠— הרי הוא כישראל לכל דבריו.

If he accepts upon himself all of these ramifications, then they circumcise him immediately. If there still remain on him shreds of flesh from the foreskin that invalidate the circumcision, they circumcise him again a second time to remove them. When he is healed from the circumcision, they immerse him immediately, and two Torah scholars stand over him at the time of his immersion and inform him of some of the lenient mitzvot and some of the stringent mitzvot. Once he has immersed and emerged, he is like a born Jew in every sense.

אשה ⁠— נשים מושיבות אותה במים עד צוארה, ושני תלמידי חכמים עומדים לה מבחוץ, ומודיעין אותה מקצת מצות קלות ומקצת מצות חמורות.

For the immersion of a woman: Women appointed by the court seat her in the water of the mikveh up to her neck, and two Torah scholars stand outside the bath house so as not to compromise her modesty, and from there they inform her of some of the lenient mitzvot and some of the stringent mitzvot.

אחד גר, ואחד עבד משוחרר. ובמקום שנדה טובלת, שם גר ועבד משוחרר טובלין. וכל דבר שחוצץ בטבילה, חוצץ בגר ובעבד משוחרר ובנדה.

The procedure applies for both a convert and an emancipated slave who, upon immersion at the time of his emancipation, becomes a Jew in every sense. And in the same place that a menstruating woman immerses, i.e., in a mikveh of 40 se’a of water, there a convert and an emancipated slave also immerse. And anything that interposes between one’s body and the water of the mikveh with regard to immersion of a ritually impure person, in a manner that would invalidate the immersion, also interposes and invalidates the immersion for a convert, and for an emancipated slave, and for a menstruating woman.