What is

A1: אֶת־חֻקֹּתַי֘ תִּשְׁמֹ֒רוּ֒ בְּהֶמְתְּךָ֙ לֹֽא־תַרְבִּ֣יעַ כִּלְאַ֔יִם שָֽׂדְךָ֖ לֹֽא־תִזְרַ֣ע כִּלְאָ֑יִם וּבֶ֤גֶד כִּלְאַ֨יִם֙ שַֽׁעַטְנֵ֔ז לֹ֥א יַֽעֲלֶ֖ה עָלֶֽיךָ There are 3 types of Kilayim – Crossbreeding animal species, crossbreeding plant species, weaving wool and linen together. The question is “what is a species” according to the Torah. Since there are a number of places that the definition of species plays…

It is not mentioned in a single place in the Gemara or the Rishonim to my knowledge. It all comes from being based  ספרים חיצונים Such as וכדומה  יוסיפים But in my opinion, there is ample evidence to 2 things: 1. There is no Halacha that dictates as to what the source of Argaman should…

Archaeological discovery of mounds of Murex snails at coastal dyeing sites, as well as literary evidence from the ancient world of dyeing and chemical analysis of the Murex dye, are all strong evidence in support of this conclusion. More importantly, the growing number of Rabbinic personalities and halachic communities wearing Tekhelet today, lends further credence…

Wearing Tekhelet on tzitzit is a mitzvah prescribed by the Torah. It is a commandment which is intended for all generations, independent of location and unrelated to the existence of the Temple. It is only during the last century that we have had the means and privilege of embarking upon the restoration of Tekhelet, which…

There are different opinions regarding how Tekhelet should be tied. Bear in mind that the technique chosen does not qualify/disqualify the mitzvah, except for certain minimal requirements. Today, Tekhelet is being tied following the opinions of various legal authorities including the Vilna Gaon, the Rambam, the Sefer HaChinuch, and Chabad.

The dye extraction process is performed by workers under P’til Tekhelet’s supervision. The actual dyeing of wool with the Tekhelet is undertaken by P’til Tekhelet, (in Jerusalem and its environs) under the direction of its founder Rav Eliyahu Tavger, and in consultation with various Poskim. The wool is dyed expressly with the intent of the…

Murex trunculus snails live along the coast of the Mediterranean Sea. In ancient Israel, the tribe of Zebulun, located on the North-East coast, was attributed with having the chilazon. Archaeological digs have since uncovered mounds of broken Murex shells and remains of the dyeing industry on the North-Eastern coast of Israel. Today, since Murex trunculus snails are a…

Murex snails possess a gland which contains the source of Tekhelet. Dibromoindigo, which originates from glandular secretions of a fresh snail, bonds chemically to wool when put into solution in a reduced state (vat dyeing). In the presence of sunlight, the dibromoindigo debrominates to indigo, leaving color-fast blue wool.

The Talmud describes Tekhelet as coming from a sea-creature called a chilazon. In a homiletic passage, the chilazon is characterized as “similar to the sea, being similar to [but not] a fish, and coming up from the sea once in seventy years [rarely].” Chilazon in modern Hebrew means “snail”. Rabbinic, historical, archaeological and chemical evidence…

Tekhelet is one of the colors mentioned in the Torah, traditionally associated with a shade of blue. It is mentioned frequently alongside gold, silver and silk as a precious commodity. There is a Biblical commandment to tie a thread of Tekhelet around the tzitzit (fringes) of cornered garments. In addition, Tekhelet is required in the…