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The Petil Techelet company (I believe) makes three types of colored strings:

  • Raavad- 1 full string of blue
  • Tosafot- 2 full strings of blue
  • Rambam- 1/2 string of blue

Does the Rif or Rosh mention any method of coloring the strings?

The reason I'm asking this question is to be my own Shulhan Aruch and determine which coloring he would recommend.

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  • I was under the impression that they stopped selling the Tosfot style due to lack of demand and those who want to wear it just buy two sets of Raavad.
    – Double AA ♦
    Jan 9, 2012 at 6:09
  • I would just like to point out, that once you have techelet, and you look into the way you tie the knots. The number of blue strings only works for the type of knot you tie. Meaning, if you tie like rambam, using two blue strings is impossible. If you tie like Rav Amran Hagaon, then using 1 full blue string also makes no sense.
    – avi
    Jan 9, 2012 at 7:07

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הלכות קטנות לרא"ש (מנחות) הלכות ציצית סימן ו

ו תנן בראש התכלת [שם דף לח א] התכלת אינו מעכב את הלבן הלבן אינו מעכב את התכלת. פירש"י אף ע"ג דמצוה לתת ב' חוטי תכלת וב' לבן בציצית אפילו הכי אין זה מעכב את זה ואי עביד ארבעתן תכלת או ארבעתן לבן יצא ולכאורה הוי משמע דאין זה מעכב את זה היינו שאם הטיל ב' חוטין מין אחד יצא כי הא דתפילין של יד אינה מעכבת של ראש ושל ראש אינה מעכבת של יד. ונהגו כפירוש רש"י.

In short, the Rosh holds that there should be 2 strings of blue and 2 strings of white.

I am fairly certain the Rif does not comment.

NOTE:

You may find it interesting to note that Rav Yosef Karo in his Beit Yosef does comment on the issue.

בית יוסף אורח חיים סימן יא

ונראה דלא בעי למיחת לפלוגתא במלתא דלא נפקא לן מידי בהאי זימנא

Roughly translated as: And it seems that we don't need to enter into this disagreement [regarding the number of blue strings] as it is a matter which has no practical purpose at this time.

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  • I think Maran holds like the Tur Rosh etc.
    – Hacham Gabriel
    Jan 9, 2012 at 4:53
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    See the Hatam Sofer O"H 1:1 where I believe he says like the Rambam.
    – Hacham Gabriel
    Jan 9, 2012 at 4:57
  • @HachamGabriel I don't see the proof from the Chatam Sofer. He's just talking aliba the rambam. That doesn't mean he holds like him. Also, why do you think Maran holds 2&2?
    – Double AA ♦
    Jan 10, 2012 at 0:59
  • @DoubleAA see the Ksefer Mishne and the other mefaresh I mentioned. Mase Rokeah.
    – Hacham Gabriel
    Jan 11, 2012 at 18:15
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    "In short, the Rosh holds that there should be 2 strings of blue and 2 strings of white. I am fairly certain the Rif does not comment." Based on what is said in the introduction to Beit Yosef (about what to do in case of a disagreement between two of the his main authorities on a given matter, and the third being silent), the Ramban, the Rashba, the Ran, the Mordechai and Semag should be consulted, for a majority of their opinions. @HachamGabriel
    – Tamir Evan
    Jan 27 at 5:23

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