וְאֶל־הָעָ֨ם תֹּאמַ֜ר הִתְקַדְּשׁ֣וּ לְמָחָר֮ וַאֲכַלְתֶּ֣ם בָּשָׂר֒ כִּ֡י בְּכִיתֶם֩ בְּאָזְנֵ֨י יְהוָ֜ה לֵאמֹ֗ר מִ֤י יַאֲכִלֵ֙נוּ֙ בָּשָׂ֔ר כִּי־ט֥וֹב לָ֖נוּ בְּמִצְרָ֑יִם וְנָתַ֨ן יְהוָ֥ה לָכֶ֛ם בָּשָׂ֖ר וַאֲכַלְתֶּֽם׃
Empero dirás al pueblo: Santificaos para mañana, y comeréis carne: pues que habéis llorado en <span class="x" onmousemove="Show('perush','El Rambam explica esta parte del versículo en el <b>1º Capítulo</b> de Las Leyes de los Fundamentos de la Torá.',event);" onmouseout="Close();">oídos del Señor</span>, diciendo: ¡Quién nos diera de comer carne! ¡cierto mejor nos iba en Egipto! El Señor, pues, os dará carne, y comeréis.
Sha'arei Kedusha
From this we see that when a Chassid is occupied in the study of Torah or in performing the mitzvot or in good character traits; if even a hint of motivation to receive a reward is mixed into it, he is a Chassid for himself, as in the verse,72Proverbs 11:17 “A man of kindness (Ish Chessed) brings goodness upon himself.” This is because when he fulfills the mitzvot, he brings goodness upon himself. Therefore, he is called a “Man of Chessed” rather than a “Chassid,” because he does himself the kindness. Only a person whose sole motivation is to do a kindness for his Master can be truly called a “Chassid” and a “Holy Man.” This is because he has become purified from all impurities and has sanctified himself in HaShem’s-יהו"ה holiness, blessed is He. We find that the term קדושה-Kedushah (holiness) means “preparation,” as in the verse,73Numbers 11:18 “Prepare74The word here for “prepare yourselves” is “Hitkadshoo-sanctify yourselves” (התקדשו). yourselves for tomorrow and you shall eat meat.” This is because such a person makes himself the vehicle for HaShem’s-יהו"ה holiness, blessed is He. As mentioned above, rather than caring about his own glory, he only cares about his Master’s glory.