According to Brachot, "Anyone who says something in the name of the one who originally said it brings redemption to the world".

So I would like to credit the Israel Koschitsky Virtual Beit Midrash, from Yeshivat Har Etzion, GEMARA SOTA 5761

By Rav Mosheh Lichtenstein

Shiur 13: Sota 14a

with providing me for the sources about Deuteronomy, including the pasuk and the Sifrei on it.