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Let's you asked your old rabbi a question and he answered you, but not let's say you lost contact with him or some other story. Do you still have to follow this pesak or can you change?

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webcache.googleusercontent.com/… I think the answer may be in here. I hope to summarize it later. – Double AA Jan 9 '12 at 2:19
If I see the title correctly, this is about the concept of "lo bashamayim hi" which is not what I'm looking for. – Hacham Gabriel Jan 9 '12 at 2:20
@HachamGabriel search the page (mentioned by doubleAA ) for the words "How long does the ruling remain binding?" – Shmuel Brin Jan 9 '12 at 3:12
@ShmuelBrill Yes that's what I was referring to. I'm a little busy now to write it up right, so if you (or anyone else) want to, that's ok by me. – Double AA Jan 9 '12 at 4:15
Your question is very unclear. Did you ask the rabbi a long time ago? Did you happen to bump into him and ask him the question? Do you live in his community? What happened and what are the circumstances? – Seth J Jan 13 '12 at 14:29

If you change rabbi/shita/chasidis - you take on the laws of the new.

EG - ashkenaz woman marries sfardi - eats rice on pesach Askenaz turns sefardi - change your tefilin If your new rebbi only holds R Tam lechumra, you should not hold it lekula in his town.

If you learn a sugya/halacha or anything wrong, or differntly later - you change. Judaism is a living organism

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Do you have an halachic source for the assertion that one can, let alone should, change his practices when he change rabbis or chasiduyos? – msh210 Jan 13 '12 at 15:59
@Jon - Regarding Judaism being a "living organism," I heard a shiur by R' Moshe Weinberger (who is from Aish Kodesh Woodmere) on Orot (by Rav Kook) that reminded me of this. – Adam Mosheh Apr 18 '12 at 4:13

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