— something that flesh and blood cannot do. And this is the intent of (Psalms 62:12) "One thing has G-d spoken; two things have I heard!"
(Devarim 22:12) "Fringes shall you make for yourself": What is the intent of this? Because it is written (Bamidbar 15:38) "and they shall make for themselves tzitzith," I might think that one strand by itself suffices; it is, therefore, written "gedilim" (fringes). How many fringes? Not fewer than three, three fingers long, as per Beth Hilell. Beth Shammai say: Three strands of white and a fourth of tcheleth (purple-blue), four fingers long. "gedilim" are white. Whence do I derive that I add a fourth of tcheleth? From (Ibid.) "and they shall put on the tzitzith of the corner a thread of tcheleth."