Antisemitic "Quote"
“Sexual intercourse with a little girl is permitted if she is three years old”
— Yevamos 11b
Status

Analysis
Yevamos 11b deals with the topic of whether certain prohibited marriages* can result in a levirate marriage ** when the husband dies. At no point on the page is sex with a three-year-old talked about.
* In Judaism, it is prohibited for a man to remarry his ex-wife if she was married to someone else after him. There are, of course, other prohibited marriages, but this is the main one discussed on the page.
** A levirate marriage is the main topic of Tractate Yevamos. In short, if a man dies without living descendants, his brother may marry his wife to carry on the deceased brother’s name. (Dueteronomy 25:5-10)
