The Shulchan Aruch · Yoreh De'ah
יורה דעה ק״סYoreh De'ah 160
Siman 160 of 402 in Yoreh De'ah — 23 se'ifim
הלכות ריביתInterest· siman 160
Se’if 1א׳
צָרִיךְ לִזָּהֵר בְּרִבִּית, וְכַמָּה לָאוִין נֶאֶמְרוּ בּוֹ. וְאֲפִלּוּ הַלֹּוֶה הַנּוֹתְנוֹ וְהֶעָרֵב וְהָעֵדִים עוֹבְרִים. הַגָּה: וְאֵין חִלּוּק בֵּין אִם מַלְוֶה לְעָנִי אוֹ לְעָשִׁיר. (הַמ"מ פ"ד מֵהל' מַלְוֶה וְלוֹוֶה). וְהָא דְּלֹוֶה עוֹבֵר, דַּוְקָא בְּרִבִּית דְּאוֹרַיְתָא, אֲבָל בְּרִבִּית דְּרַבָּנָן אֵינוֹ עוֹבֵר אֶלָּא מִשּׁוּם לִפְנֵי עִוֵּר וְגֵו' (וַיִּקְרָא יט, יד). (ר"ן פ' זֶה בּוֹרֵר ובנ"י פא"נ וְכֵן כָּתַב ר' יְרוּחָם ני"ח).
One must be careful in the matter of interest, and several negative commandments were stated concerning it. And even the borrower who gives it, and the surety, and the witnesses, transgress. Hagah [Rema]: And there is no distinction between whether he lends to a poor man or to a rich man. (the Maggid Mishneh, chapter 4 of the Laws of Lender and Borrower) And this, that the borrower transgresses, is specifically in interest by Torah law; but in interest by rabbinic law he transgresses only on account of "before the blind" and so forth (Leviticus 19:14). (the Ran, chapter "This one chooses", and in the Nimukei Yosef, chapter "Which is interest", and so wrote Rabbeinu Yerucham, netiv 18)
Se’if 2ב׳
כָּל הַנּוֹתֵן בְּרִבִּית, נְכָסָיו מִתְמוֹטְטִים, וּכְאִלּוּ כָּפַר בִּיצִיאַת מִצְרַיִם וּבֶאֱלֹהֵי יִשְׂרָאֵל
Everyone who gives at interest, his property crumbles away, and it is as though he had denied the exodus from Egypt and the God of Israel.
Se’if 3ג׳
הַתּוֹלֶה מְעוֹתָיו לוֹמַר שֶׁהֵם שֶׁל עוֹבֵד כּוֹכָבִים, וּמַלְוֶה אוֹתָם בָּרִבִּית, הקב"ה יִפְרָע מִמֶּנּוּ.
One who hangs his money upon another, to say that it belongs to an idolater (oved kokhavim — the standing term for a gentile), and lends it out at interest — the Holy One, blessed be He, exacts payment from him.
Shulchan Aruch, Yoreh De'ah — Torat Emet 357 edition, via Sefaria — public domain
English rendered from the Hebrew for this app — The Gematria's own rendering program. A rendering of the words, not a ruling; practical halacha is learned with a rav