Reference for Menachot 80:4

שרא רבי זירא לסדיניה רב זירא אמר גזירה נמי משום כסות לילה

and not use what is ready made'.<span class="x" onmousemove="('comment',' Accordingly when threads of wool are added to the fringe the prohibition of diverse kinds applies and it is not waived by the precept since the precept is not properly performed.');">⁷</span> R'Zera [it was reported,] removed [the fringes from] his linen garment.<span class="x" onmousemove="('comment',' For the same reason as explained above by Raba.');">⁸</span>

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