כִּֽי־תִרְאֶ֞ה חֲמ֣וֹר שֹׂנַאֲךָ֗ רֹבֵץ֙ תַּ֣חַת מַשָּׂא֔וֹ וְחָדַלְתָּ֖ מֵעֲזֹ֣ב ל֑וֹ עָזֹ֥ב תַּעֲזֹ֖ב עִמּֽוֹ׃ (ס)
<span class="x" onmousemove="Show('perush','Estas palabras sirvieron al Rambam como referencia al <b>202do Precepto Positivo</b> y al <b>270mo Precepto Negativo</b> enumerados en el Prefacio a Mishné Torá, su “Compendio de la Ley Hebrea” para todo el Pueblo de Israel.',event);" onmouseout="Close();">Si vieres el asno del que te aborrece caído debajo de su carga, ¿le dejarás entonces desamparado? Sin falta ayudarás con él a levantarlo</span>.
Rashi on Exodus
כי תראה חמור שנאך וגו׳ IF THOU SEE THE ASS OF HIM THAT HATETH THEE etc. — כי here has the meaning of “possibly”, “perhaps”, which is one of the four meanings which the word כי serves to express. The sense of the verse is accordingly the following: Can you possibly see his ass crouching beneath his burden and forbear to help him? (The Hebrew word בתמיה in Rashi means “Say this in the intonation of a question”, and is nothing more than our question mark).
Rashbam on Exodus
חמור שנאך, the Torah uses the most likely scenario as its model. [Clearly, you are to do no less for the animal of a friend or relative.]
Tur HaArokh
וחדלת מעזוב לו, “and you would refrain from assisting him;” this is a veiled warning that you must not dare abandoning him to his problems just because the owner of the beast has a record of being hostile to you. On the contrary, you must make every effort to assist such a person, provided he too does his share in enabling the overloaded beast to get rid of its burden.