I used to wear all-white tzitzis, as is the more "universal" custom.

Some time ago, I was convinced to start wearing a blue thread in them, to fulfill the commandment in the Torah to insert a psil techeiles.

Later, I concluded that we do not have a mesorah for techeiles and therefore the companies which manufacture techeiles nowadays do not have the "real deal" dye from the chilazon.

I switched back to using all-white strings.

Did I act properly? Is one allowed to revert to using all-white strings when he decided to put a blue thread in it as the Torah commands? One possible problem I see is that we never go down in holiness, but rather only up (maalah b'kedushah v'lo matah).

In my case I believed initially the blue dye was the real deal, but later concluded that it was not. This case does not deal with someone who believed, and continues to believe, the blue dye we have today is indeed from the chilazon, but yet wears all-white strings anyway for whatever reason. I believe such a question would have to be asked separately.

Notice: I'd like to avoid confrontation about rather the techeiles we have today (be it from the murex trunculus or the cuttlefish) being the real deal. That is not what this question is about; and trust me - I've read into the whole thing. I'm familiar with the arguments.

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    techielies is not a minhag ,you are either trying to fulfill a Torah obligation or not,if you beileve its the real thing or a safek then why would you switch back,and if you were concived that its not true techieleis at all then whats even the q? – sam Mar 21 '17 at 2:41
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    Remember to include motivation in the post itself. – mevaqesh Mar 21 '17 at 3:28
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    Not your motivation for wanting to revert back. Your motivation for asking — meaning: why is this at all a question that anyone would be interested in? (Answer: because [you say] t'cheles in tzitzis may count as a minhag nowadays and perhaps halachos could get more complicated when one changes his minhag and then reverts.) That's what you should edit in to the question. – msh210 Mar 21 '17 at 7:28
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    "It could be argued that techeiles is more of a minhag today." I don't see how that could be argued. @sam is totally right. – Double AA Mar 21 '17 at 11:59
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    I don't understand the question. You're assuming the currently available blues are wrong. Ok. So what could possibly be gained by wearing it? How is wearing a nonsense string a higher level of holiness? Maybe you'd have a question if you changed from thinking it was Vadai right to Safek right. But as currently posed there's nothing here. – Double AA Apr 22 '18 at 4:35

Yes. Be mattir neder first just in case, the same as any other custom that a person takes on and then wants to abandon.

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    Thanks for your answer! Do you have a source? – andrewmh20 Mar 26 '17 at 21:12
  • Comments are not for extended discussion; this conversation has been moved to chat. – msh210 Apr 21 '18 at 19:19

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