In the Escorial manuscript, the text of Tractate Nezikin of the Babylonian Talmud is presented in the center of the page. Below it, in the margins, is the legal digest of Isaac al-Fasi; on the right and left of the folios are the rulings of Maimonides; and at the top of the page, in a narrow strip, is the text of the Talmud Yerushalmi. The surprising discovery of this text places at the disposal of researchers an additional version of the Talmud Yerushalmi...