2. HE ASKS, If so, what is the meaning of "adei ad"? AND ANSWERS, It means that the strength of a person should be in the place which sustains and connects everything, and which is called "ad," WHICH IS ZEIR ANPIN, as it is written, "In the morning he shall devour the prey (Heb. ad)" (Beresheet 49:27). "Ad" is the place that unites this side and that side, MEANING THAT IT IS THE CENTRAL COLUMN THAT CONNECTS THE RIGHT SIDE AND THE LEFT SIDE TO EACH OTHER, for sustenance and connecting, NAMELY, SO THAT THE TWO COLUMNS ARE SUSTAINED, AND THEIR ILLUMINATIONS ARE LINKED TO EACH OTHER, a connection that will not be destroyed.
2. אִי הָכִי מַהוּ עֲדֵי עַד. אֶלָּא, בְּגִין דִּיהֵא תֻּקְפָּא דְּבַר נָשׁ, בַּאֲתַר דְּאִיהוּ קִיּוּמָא וְקִשּׁוּרָא דְּכֹלָּא, וְאִקְרֵי עַד, וְהָא אוּקְמוּהָ, כְּמָה דְּאַתְּ אָמֵר, בַּבֹּקֶר יֹאכַל עַד. וְהַאי עַד, אֲתָר דְּאָחִיד לְכָל סִטְרִין, לְסִטְרָא דָּא, וּלְסִטְרָא דָּא, לְאִתְקַיְּימָא, וּלְאִתְקְשְּׁרָא קִשְׁרָא, דִּי לָא תַּעְדֵי.