Comentario citado sobre Isaías 19:9

with bare buttocks (וַחֲשׂוּפַי), like חֲשׂוּף, and the yud is superfluous, like the yud of חַלּוֹנָי (the window), חוֹרָי, (nets), שָׂדָי (the field).

פישון PISHON — This is the Nile, the River of Egypt. Because its waters grow plentiful and rise and water the land, it is called Pishon, the name being of the same root as the verb in (Habakkuk 1:8) ופשו פרשיו “and their horsemen increased”; another interpretation of the name Pishon is: it is so called because it grows flax (פשתן) (Genesis Rabbah 16:2) for it is said with reference to Egypt (Isaiah 19:9) “Moreover they that work in combed flax, shall be ashamed.”

סלי חרי; full of holes. The word חורים, appears as meaning holes in Job 30,6 חורי עפר וכפים, “holes in the ground and in rocks.” It also appears in this sense in Isaiah 19,9 ואורגים חורי, “and the weavers making holes.” Baskets which are usually of woven palm frond leaves have these little holes as the nature of weaving does not permit the resulting texture of the material to be airtight and waterproof.

with superior braided work of Egypt Heb. חטבות אטון מצרים, praiseworthy, high quality linen garments coming from Egypt, where linen is common, as it is written in the Book of Isaiah (19: 9): “And those who work at flax... shall be ashamed.” braided work Heb. אטון. The Aramaic translation of מיתריהם, their ropes (Num. 4:32), is אטוניהון.