Commentary for Eruvin 193:7

אמר רב חסדא אמר רב הלוקח תפילין ממי שאינו מומחה בודק שתים של יד ואחת של ראש או שתים של ראש ואחת של יד

The reason then<span class="x" onmousemove="('comment',' Why a loop is inadmissible on the Sabbath in the straps of the tefillin');">¹⁵</span> is that a loop is like a proper knot, but if that had not been so one would presumably have been allowed to fasten them with a loop. But, it may be objected, did not R'Judah son of R'Samuel B'Shilath rule in the name of Rab: The shape of the knot of the tefillin is a halachah that was given to Moses at Sinai, and R'Nahman explained: Their ornamentation<span class="x" onmousemove="('comment',' Sc. the right side of the letter.');">¹⁶</span>

Explore commentary for Eruvin 193:7. In-depth commentary and analysis from classical Jewish sources.