2:11ב׳:י״א
1 א

פישון. הוּא נִילוּס נְהַר מִצְרַיִם, וְעַל שֵׁם שֶׁמֵּימָיו מִתְבָּרְכִין וְעוֹלִין וּמַשְׁקִין אֶת הָאָרֶץ נִקְרָא פִישׁוֹן כְּמוֹ וּפָשׁוּ פָּרָשָׁיו (חבקוק א') דָּ"אַ פִּישׁוֹן, שֶׁהוּא מְגַדֵּל פִּשְׁתָּן, שֶׁנֶּאֱמַר עַל מִצְרַיִם (ישעיהו י"ט) וּבֹשׁוּ עֹבְדֵי פִשְׁתִּים:

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.”