וַתֵּ֨רֶא הָאָת֜וֹן אֶת־מַלְאַ֣ךְ יְהוָ֗ה וַתִּלָּחֵץ֙ אֶל־הַקִּ֔יר וַתִּלְחַ֛ץ אֶת־רֶ֥גֶל בִּלְעָ֖ם אֶל־הַקִּ֑יר וַיֹּ֖סֶף לְהַכֹּתָֽהּ׃
And the ass saw the angel of the LORD, and she thrust herself unto the wall, and crushed Balaam’s foot against the wall; and he smote her again.
Rashi on Numbers
וַתִּלָּחֵץ — the Niphal form denotes that SHE PRESSED HERSELF.
Rashbam on Numbers
ותלחץ את רגל בלעם, which resulted in Bileam becoming partially lame as we know from 23,3 וילך שפי, he walked with a limp.
Rashi on Numbers
וַתִּלְחַץ — the Kal denotes that SHE PRESSED something else — viz., את רגל בלעם BALAAM’S FOOT.