ו כָּל בְּדִיקוֹת אֵלּוּ, בֵּין בְּדִיקַת הֶפְסֵק טָהֳרָה בֵּין בְּדִיקַת כָּל הַשִּׁבְעָה, צְרִיכוֹת לִהְיוֹת בְּבֶגֶד פִּשְׁתָּן לָבָן יָשָׁן, אוֹ בְּצֶמֶר גֶּפֶן, אוֹ בְּצֶמֶר לָבָן נָקִי וְרַךְ, וְתַכְנִיסֶנּוּ בְּאוֹתוֹ מָקוֹם בָּעֹמֶק לַחוֹרִים וְלַסְדָקִים עַד מָקוֹם שֶׁהַשַּׁמָּשׁ דָּשׁ, וְתִרְאֶה אִם יֵשׁ בּוֹ שׁוּם מַרְאֵה אַדְמוּמִית, וְלֹא שֶׁתַּכְנִיסֵהוּ מְעַט לְקַנֵּחַ עַצְמָהּ. וְאִם יִקְשֶׁה בְּעֵינֶיהָ מְאֹד לְהַכְנִיסוֹ כָּל כָּךְ בָּעֹמֶק, לְפָחוֹת בְּדִיקָה שֶׁל יוֹם הֶפְסֵק טָהֳרָה וּבְדִיקָה שֶׁל יוֹם רִאשׁוֹן מֵהַשִּׁבְעָה תִּהְיֶינָה עַד מָקוֹם שֶׁהַשַּׁמָּשׁ דַּשׁ. הַגָּה: וְאִם לֹא עָשְׂתָה כֵן בִּבְדִיקַת יוֹם רִאשׁוֹן, תַּעֲשֶׂה פַּעַם אַחַת כֵּן מִבְּדִיקוֹת שְׁאָר הַיָּמִים (בֵּית יוֹסֵף); מִיהוּ בְּדִיעֲבַד אִם לֹא עָשְׂתָה כֵן כְּלָל רַק שֶׁבָּדְקָה עַצְמָהּ יָפֶה בַּחֹרִין וּבַסְּדָקִין בָּעֹמֶק הֵיטֵב כְּפִי כֹּחָהּ, אַף עַל פִּי שֶׁלֹּא הִגִּיעַ לְמָקוֹם שֶׁהַשַּׁמָּשׁ דָּשׁ, סָגֵי לָהּ (בֵּית יוֹסֵף שכ"ד רֹב הַפּוֹסְקִים וְכֵן מהרא"י בִּפְסָקָיו סִימָן ע"ח וּב"ח).
6 All of these examinations, both the hefsek tahara and the internal examinations which are conducted during the course of the seven blood-free days, must be performed with an old, white linen piece of fabric, or with cotton, or with wool which is clean, soft, and white. It should be inserted into the vaginal cavity to the depth which a man's reproductive organ enters during intercourse, and it should make contact with the crevices and openings, in order to see if there is anything which is reddish in appearance. It is not sufficient for her to merely wipe herself and enter the vaginal cavity slightly. If she finds it very difficult to insert the cloth to such a depth, at the very least she should do so for the internal examination of the day on which she sees her bleeding stop and the internal examination on the first day of her seven blood-free days. Rema: But, if she did not do so for the internal examination on the first day of her seven blood-free days, she should do so for at least one of the internal examinations of the remaining days. However, after the fact, if she didn't do any internal examinations to such a depth, but she did check the crevices and openings within the vaginal cavity well as deep as she is able, even though she didn't reach the depth that the male organ reaches during intercourse, it is sufficient.