hadlakas menorah as a kiyum of binyan mikdash

The Ramban famously asks why the torah puts the parsha of hadlakas ha'menorah after the gifts of the nesiim for the chanukas ha'mishkan. He quotes the midrash that presents the opportunity of lighting the menorah as a consolation prize, if you will, to Aharon, because his sheivet did not participate in giving any gifts. Why is menorah the consolation prize and not avodas ha'korbanos? Ramban answers that menorah alludes to the lighting of chanukah, which we retain even in galus. Avodas ha'korbanos is a gift of limited duration, as the mikdash unfortunately was destroyed.

Back in 2012 I quoted a Kozhiglover (I tried to find the exact mareh makom and couldn't find it - sorry I did not link to it then) that there are 2 dinim in hadlakas ha'menorah: 1) hadlakah as an end in its own right; 2) hadlakah as a kiyum in binyan ha'mikdash, as part of constructing a mikdash fit for a king, fit for THE King, is to have a palace that is illuminated.

A proof to this notion can be found in parshas Terumah, which opens with a list of items that were donated to help in the building of the mishkan, among them שֶׁ֖מֶן לַמָּאֹ֑ר. Daas Zekeinim notes that when speaking about most of the gifts, the torah does not say what the gift was used for or what the need for it was, but when it comes to oil, it does.

תימה שכל הפרשה בצרכי בנין חוץ מפסוק זה שהוא צורך שלחן גבוה ואינו אומר חטים ללחם הפנים וכבשים לתמידין ועצים למערכה וי״ל ששלשתן צורך בנין הן שמן המשחה שבו נמשחו ונתקדשו כל כלי המשכן וקטרת נמי שכן דרך מלכים שמבשמין להם הבית קודם שיכנסו לתוכה וכ״ש לפני ממ״ה הקב״ה וכן מצינו שעל ידי הקטרת שכינה נראית דכתיב וכסה ענן הקטרת וכתיב כי בענן אראה. ושמן למאור שכן דרך המלכים להדליק נר לפניהם קודם שיכנסו לבית ואע״ג דלאו לאורה הוא צריך מ״מ הוא כבוד של מעלה.

Parshas Terumah is about collecting what is needed to build the mishkan.  The difference between oil and other items is that the hadlakas hamenorah is part of the mitzvah of binyan ha'mishkan, not just an avodah done in the mishkan. A king's palace would be incomplete if it was a dark, uninviting building. The building itself would be missing an essential feature.

The notion also helps resolve a few problems with the Rambam's famous view (Bias Mikdash 9:7) that the menorah in the mikdash can be lit by a zar. Rishonin (e.g. Tos Yeshanim Yoma 24b) are bothered by the fact that the Torah refers to the lighting being done specifically by Aharon ha'kohen, not just anyone. Furthermore, as the Minchas Chinuch asks, if a zar lights the menorah, it would have to be done outside the heichel, in a place accessible to the zar. Wouldn't the menorah then have to be moved to its proper place next to the Shulchan? How can one fulfill the mitzah of hadlakah if it is done in the wrong place?

One can answer that the kiyum of hadlakas ha'menorah can in fact take place anywhere and be done by anyone. The fact that the menorah must be placed next to the shulchan is a din in binyan ha'mikdash, the structure of the bayis, not the mitzvah of lighting per se. Aharon's role was to ensure that the binyan ha'mikdash, as fulfilled through lighting, is done properly by seeing that the menorah is placed correctly.

This yesod helps explain a few chanukah halachos:

The Rambam, unlike just about all other Rishonim, holds that there was a mitzvah to light the menorah in the morning as well as in the afternoon. Rashba attacks this view. One of his questions is from the din that the first lighting of the menorah, the chinuch, must be done in the afternoon. If there is a mitzvah to light the menorah even in the morning, why can't the chinuch be done then?

The answer might be that the mitzvah of lighting in the morning is a din in binyan ha'mikdash, not a kiyum in the hadlakas ha'menorah itself.

This would also explain why we light chanukah menorah only at shekiya and not during the day. If we are commemorating the lighting which took place in the mikdash, why not light in the day as well, since according to Rambam the menorah in the mikdash was lit in the day as well as at night? R' Soloveitchik suggested that since שרגא בּטיהרא מאי אהני there is no "shem ner" on such a light (ayen sham for a different answer). This also explains the strange timing of menorah lighting. Usually mitzvos have to be done either during the day, i.e. from sunrise until sunset, or are done at night, i.e. after tzeis ha'kochavim. By ner chanukah we have the strange phenomenon of not lighting during the day, but, according to Rambam/GRA, not waiting for tzeis and true nightfall either to do the mitzvah. Instead, we light at shekiya, just as bein ha'shemashos starts. According the RYBS, the hesber is that there is a chovas ha'gavra is to light during the day, but we wait until it begins to get dark because otherwise the candle does not have a shem ner as it provides no benefit.

If lighting during the day is not a kiyum of the mitzvah of hadlakas menorah but rather a din in binayan mikdash, then question of why we don't light chanukah candles during the day does not get off the ground. Lighting the chanukah menorah commemorates the mitzvah of hadlakas ha'menorah in the mikdash that is connected with the miracle of the oil, not the binyan ha'mishkan.

This same yesod helps explain an anomoly in the text of al ha'nissim.  Although we omit any mention of the nes of the oil in al ha'nissim, there is one line at the end about "hidliku neiros b'chatzros kodshecha." If Chazal wanted to include the nes of the menorah in our tefilah, why sneak it in in passing and not give it a more prominent mention? R' Avraham Gurewicz, R"Y of Gateshead, writes that this line is not about the lighting as a kiyum of hadlakas ha'menorah. The context has to do with the Chashmonaim repairing the mikdash -- "ti'haru es mikdashecha..." That line has to do with the lighting as a kiyum of binyan ha'mikdash, which is the theme of the tefilah.

Coming back to Ramban's question that we started with, it is davka hadlakas neiros which is the "consolation prize" and not avodas ha'korbanos because Hashem wanted to give Aharon a chance to contribute to binyan ha'mikdash, and it is the mitzvah of hadlakas ha'menorah, not avodas ha'korbanos, which fills that role of being a kiyum in binyan ha'mikdash.