Is techelet (blue dye for tzitzit) an indispensable component of the mitzvah, or can the mitzvah be fulfilled with white (lavan) alone?
Synopsis
The Aruch HaShulchan records that techelet and white are not indispensable to each other. The Rambam holds white is indispensable (techelet without white is invalid), while techelet without white remains valid. Today we fulfill the mitzvah fully with white alone.
More in Materials for Tzitzit
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