Orthodox Jewish Writing
Niddah 45a
"It was asked, Do the features of virginity6 disappear7 and reappear again8 or is it possible that they cannot be completely destroyed until after the third year of her age? In what practical respect could this matter? — In one, for instance, where her husband had intercourse with her before the age of9 three and found blood, and when he had intercourse after the age of three he found no blood."
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