Hot answers tagged techeles
There's a new booklet being distributed (not very widely) by someone in Bnei Brak. In the front material has a very long letter by Rav Moshe Sternbuch shlita, which argues very strongly against bnei Torah wearing Ptil Tekhelet. Some of the reasons given sound a bit surprising to me (i.e. were beyond my limited understanding); one of them was this Zohar about ...
The Rambam, in Hilchos Tzitzis (halacha 4) reads ד התכלת, אינו מעכב את הלבן; והלבן, אינו מעכב את התכלת. כיצד: הרי שאין לו תכלת, עושה לבן לבדו; וכן אם עשה לבן ותכלת, ונפסק הלבן, ונתמעט עד הכנף, ונשאר התכלת לבדו--כשר. The [absence of] techelet does not prevent [the mitzvah from being fulfilled with] the white strands, nor does the [absence of] the white ...
Rav Dov Lior rules to put Techeleth, he also rules to make double knot in the beginning and then to make ties by Rambam. I've heard this on his lesson on Mishna Berura where he showed his tzitzis tied this way. From this I conclude that double knot is essential.
Only top voted, non community-wiki answers of a minimum length are eligible