Reference for Song of Songs 8:7

The verse “Many waters cannot quench love” (Song of Songs, 8:7) Rabbi Shmuel interpreted in the following manner: Two kinds of love are referred to, the love of God for Israel which is so great that were all the nations of the world to try to thwart it, they could not do so, and the love of Israel for the Torah. Were all the nations to say: “We will sell all our possessions in order to observe the Torah and its commandments,” God would reply to them: “Even if you were to sell all your possessions to obtain the Torah, you would only be ridiculed.”¹³⁾במדבר רבה פּרשה ב׳ פּיסקא ט״ז.