Deuteronomy 33:11

מחץ מתנים קמיו means, smite those who rise up against him with a smiting of the loins, similar to the idea that is expressed, (Psalms 69:24) “Make their loins continually to totter”. It was about those who contested the High priesthood that he spake thus. — Another explanation: He foresaw that Hasmon and his sons would in future war with the Greeks, and he therefore prayed for them, because they were few in number, viz., the twelve sons of Hasmon and Eleazar against several myriads of the enemy. On this account he prayed ברך ה׳ חילו ופעל ידיו תרצה BLESS, O LORD, HIS ARMY AND ACCEPT FAVOURABLY THE WORK OF HIS HANDS (cf. Genesis Rabbah 99:2; Midrash Tanchuma, Vayechi 14). ‎ ומשנאיו מן יקומון (The first word is, like קמיו, the object of the verb מחץ) — i.e. smite those who rise up against him and those who hate him (משנאיו), that they shall have no recovery.

בָּרֵ֤ךְ יְהֹוָה֙ חֵיל֔וֹ וּפֹ֥עַל יָדָ֖יו תִּרְצֶ֑ה מְחַ֨ץ מׇתְנַ֧יִם קָמָ֛יו וּמְשַׂנְאָ֖יו מִן־יְקוּמֽוּן׃ {ס}        

Bless, Lord, his substance, and accept the work of his hands: smite through the loins those who rise against him, and those who hate him, that they rise not again.