Halachic in-depth study regarding the rules of the law of migo, by Rabbi Yeshayahu HaLevi Horowitz, grandson of the Shelah, Venice, 5426 [1666]. Single edition. 120, [4] leaf, 19.5 cm. The author [5393-5455, 1633-1695] was the grandson of Baal HaShelah, the son of his son, Rabbi Yaacov, who was orphaned in his childhood and moved from Krakov to Brisk, after that to Vilna. In the year 5415 he moved to Italy where he printed this book. To see further about him: Wander, Sages of Galicia, born 1145. Simple binding. Wide margins. Damaged title page. 3 pages of approbation, smaller than the rest of the book’s pages. Stains. Blemishes to several of the page margins. In average-good condition.