Chassidut sobre Isaías 28:8

Therefore it is forbidden to wipe with the right (hand) (Shulchan Aruch Orach Chayim Siman 3, Seif 10) because it ties the tefillin. For external wisdom that is on their hands draws down heresy/atheism, which is called (Isaiah 28:8) "vomit and filth, So that no space is left". Because food gives vitality to man and through this enlightens his face like 'Holy Food' as it is written (Ruth 3:7) "[and Boaz] ate and drank, and in a cheerful mood, as it is written in another place (Siman 19). The essence of the vitality is the aspect of the enlightening of the face, which is received through food, through the spirituality of food, which is the good in food. Only this gives vitality to man, in the aspect of (Deuteronomy 8:3) "man does not live on bread alone, but that man may live on anything that the Hashem decrees". But the corporeality of food, where evil grabs hold of him, is complete waste and (must be) rejected outside. For this is the aspect of external wisdom of heresy/atheism, which are 'vomit and filth' as explained above. Therefore, (Berachot 14) he who wishes to accept upon himself the complete yoke of Heaven, which is the aspect of (the letter) Het, as explained above, the aspect of Malchut, as seen above, must clean and wash his hands, etc. One must clean to reject the luxuries/extras, which are the aspect of external wisdom as explained above. Afterwards one cleans his hands in the waters of Chesed to draw down Chesed, as seen above. Through this one cuts the Malchut and purifies it from them (and see regarding this Hilchot Sotah, Halacha 4). Aftewards, one may don tefillin and read the Shema and pray because all of this is the aspect of the rectification of the prayer in the morning. For all the rectifications, which are arousal from slumber, 'and he cleans and washes his hands'. Tzitzit, tefillin and the reciting of the Shema and the prayer (Shmoneh Esrei) is all to elevate Malchut, as is known, which is the aspect of Lower Wisdom, as seen above. This is the aspect of 'Avraham affixed Shacharit' as it is written in the Torah as seen above. Therefore, one does not wipe (himself) with the right (hand) because it is used to tie Tefillin, which are the Light of the Face from which the aspect of vitality of Malchut elevates and is purified from them, as explained above. Therefore it is forbidden to evacuate (oneself in a direction of ) east and west (Shulchan Aruch Orach Chayim Siman 3, Seif 5) because this is facing Jerusalem, where the Holy Temple is. For there is the essence of the Light of the Face, and as explained above.