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I have long taken for granted that it is important to be m'chadesh chiddush (compose new and novel torah insights). However, I realize I have no source for that notion. Is there any source which indicates that it is important to try to come up with chiddushim, or perhaps is simply studying torah without adding any novel interpretation equally as meritorious?

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divreichaim.blogspot.com/2009/05/… points us to the Haamek Davar (Sh'ela?) on Vayikra 18:5 for an answer, but I don't have that source handy. – msh210 May 13 '13 at 21:57
@msh210 that's a nice post but I wish he would share the location of that source. ironic that it is a big chiddush itself – not-allowed to change my name May 14 '13 at 0:59
It says in the Zohar parsha bereishis (forget the exact place but definitely there) that one who makes chidushim in torah creates worlds. – Gizbar May 14 '13 at 7:23
@msh210 the source is haamek she'ela 42:10 – not-allowed to change my name May 20 '13 at 1:03
@not-vram, great; thanks. If he answers the question and you want to write up his answer here, that'd be a great benefit to the rest of us. – msh210 May 20 '13 at 7:14

Tana D've Eliyahu, Raba, near the end of chapter 10, reads:

אשרי מי שמתחדש ד״ת על פיו וכל מי שמתחדש דברי תורה על פיו דומה כמי שמשמיעין אותו מן השמים ואומר לו כך אמר הקב״ה בני בנה לי בית המדרש ששכר הגדול שיש לי באוצרי שלך הוא ובשבילך אני מציל את ישראל

— which I'm having a hard time translating, but it seems to mean:

Happy is he through whose mouth words of Torah are created. Anyone through whose mouth words of Torah are created is like someone who is called from Heaven and told, "God says, 'My son, build me a study hall, for the vast reward in my storehouse is yours, and because of you I rescue the Jews'".

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A tip of the hat to Rabbi Paysach J. Krohn (Echoes of the Maggid, page 235) for pointing me to this source. – msh210 Jun 9 '13 at 5:27
possibly 'my son built for me... – user2110 Jun 10 '13 at 14:17
@nikmasi, I'd thought of that, but then the change in person (third person to second) to "שלך" strikes me as odd. You may well be right, though. – msh210 Jun 10 '13 at 14:42

נפש החיים שער ד פרק יב:

וכל שכן חידושין אמיתים דאורייתא המתחדשין ע"י האדם. אין ערוך לגודל נוראות נפלאות ענינם ופעולתם למעלה. שכל מלה ומלה פרטית המתחדשת מפי האדם. קב"ה נשיק לה ומעטר לה. ונבנה ממנה עולם חדש בפ"ע. והן הן השמים החדשים והארץ החדשה שאמר הכתוב. כמ"ש בהקדמת הזוהר ח"א ד, ב

(my translation) How much more so every chiddush in Torah made by man, there is no measure of the greatness of its awesomeness ... every word of chiddush from the mouth of man, Hashem kisses it and crowns it, and builds from it a new world of its own, and these are the heavens and earth which the verse refers to, as is described in the Zohar

And see further there for more.

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From Mishnat Rebi Aharon 1:203

The Mesilat Yesharim writes in his introductions for things known and evident are hidden from people due to their being so evident. Therefore it is necessary to expand the matters and contemplate them, namely, the remedy to increase recognition in them is "lechadesh" (to renew something) in the matter. For the chidush (new thing) causes the entire matter to be clearer so that the evident and familiar receive a new light and shine. The sages said (Sotah 3a): "every parsha that was repeated was repeated only for some chidush (new thing) in it. It was possible to say this new chidush in the first parsha. But the benefit of repeating it is when there is a chidush (new thing). The sages already exhorted us [Midrash Vaetchanan on the verse Devarim 6:6]: "And these words, which I command you this day"] - "that they be in your eyes every day like new".

For the old does not mashpia (influence) a man and he is not affected by it. Only by adding a new idea the matter becomes changed entirely. And likewise by expounding an old matter from a different angle they also become as new....

cited here. see there for more (bottom of page)

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R. Nachman of Breslov was a great advocate of m'chadesh chiddush as long as it didnt interfere with halocha

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Shalom Anthony. Can you quote a passage of a book of Rav Nachman Mibreslav or a talmid? This can improve the answer. – kouty Jun 10 at 13:29
Welcome to Mi Yodeya Anthony. – mevaqesh Jun 10 at 20:29

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