Mishna on Sotah Daf 20 The relevance of this mishna today

(3) If she said, "I will not drink [it]" before the scroll was erased, the scroll is archived, and her meal-offering is scattered on the ashes. Additionally, her scroll is not valid to be used with (lit. "to make drink") another suspected-adulteress. If the scroll was erased and she [only then] said, "I am impure," the water is spilled, and her meal-offering is scattered on the ashes. [However,] if the scroll was erased and she said, "I will not drink [it]," we force her mouth open and make her drink against her will.

(4) She barely finishes drinking before her face becomes green, her eyes bulge, and she [seems] filled with sinews (or "veins"), and they [the priests] say, "remove her, remove her!" so she does not defile the courtyard. If she has merit, it [the effects described above] would be suspended for her. There is merit that suspends for one year, there is merit that suspends for two years, there is merit that suspends for three years. From here Ben Azai says: A man is obligated to teach his daughter Torah, for if she drinks [as a suspected-adulteress], she will know that the merit suspends it for her. Rabbi Eli'ezer says: Whoever teaches his daughter Torah is considered as if he taught her foolishness. Rabbi Yehoshua says: A woman desires a kav and foolishness more than nine kavs and abstinence. He would say: A foolish pious man, a cunning evil man, an [excessively] abstinent woman, and the self-flagellations of ascetics, all these destroy the world.