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גדלים תעשה לך. אַף מִן הַכִּלְאַיִם, לְכָךְ סְמָכָן הַכָּתוּב (יבמות ד'): גדלים תעשה לך THOU SHALT MAKE THEE TASSELS [UPON THE FOUR CORNERS OF THY VESTURE] — be they even from a mixture of wool and linen; for this reason Scripture puts them (the prohibition of שעטנז and the command of צצית) in juxtaposition (Yevamot 4a).