There could only ever be a refinement of Klipahs Nogah as a result of performing Mitzvos whilst utilizing permissible items. Whereas regarding the three Klipohs of impurity, through abstaining from transgressing a negative prohibition, will only affect a 'shove' - pushing the impurities away.
Understanding and attainment: Which is an Avodah within the confines of measures and boundaries, as much as the intellect and grasp of that individual can attain.
This explains the phraseology in the 'Al Hanissim prayer עָּמַדְתָּ לָּהֶם בְעֵׂת צָּרָּתָּם: רַבְתָּ אֶת רִיבָּם כוּ׳ You stood by them in their time of distress, You waged their wars..., For this itself is an impetus from above for each and every Jew in any situation and any predicament in which he might find himself, even if it be in a low spiritual status, the Hamshocha is there, descending from above by way of Isarussa Dil eilah' to fight the war with the 'Le'umas Zeh.'
Pushing the Impurities Away
And the 'Shove' pushing them away is not a refinement and an elevation to Kedusha (as was explained earlier in regards to the unique virtue of the lights of the Chanukah Menorah amongst other Mitzvos of our sages of blessed memory.
Low Spiritual Status
As in the situation the B’nei Yisroel were in at the time of the decrees from the Hellenists בְּעֵת צָרָתָם in the time of their distress.
The Hamshocha
Of Devine light and assistance.
The Le’umas Zeh
The other side, to help him win in his personal spiritual war.
