Talmud
Premodern estimates

The exact date at which the Talmud was compiled appears to have been forgotten at least by the second half of the Middle Ages, when estimates between the 3rd century BCE to the 9th century CE are suggested in the Wikkuah, a text that records the debates that took place in the Disputation of Paris (also known as the "Trial of the Talmud") which took place in 1240.
oulipo:avoid_letter[e]