19:37י״ט:ל״ז
1 א

מואב. זוֹ שֶׁלֹּא הָיְתָה צְנוּעָה פֵּרְשָׁה שֶׁמֵּאָבִיהָ הוּא, אֲבָל צְעִירָה קְרָאַתּוּ בְלָשׁוֹן נְקִיָּה, וְקִבְּלָה שָׂכָר בִּימֵי מֹשֶׁה, שֶׁנֶּאֱמַר בִּבְנֵי עַמּוֹן אַל תִּתְגָּר בָּם (דברים ב') – כְּלָל, וּבְמוֹאָב לֹא הִזְהִיר אֶלָּא שֶׁלֹּא יִלָּחֵם בָּם, אֲבָל לְצַעֲרָן הִתִּיר לוֹ:

מואב MOAB — This daughter who was immodest openly proclaimed that the son was born of her father (מֵאָב) but the younger named her child in a euphemistic fashion and was rewarded for this at the time of Moses, as it is said regarding the children of Ammon, (Deuteronomy 2:19) “Do not contend with them” — in any manner at all — whereas in reference to Moab it (Scripture) only forbade waging war against them but permitted them (the Israelites) to vex them (Genesis Rabbah 51:11).