Linen Tzitziot

About this learning series

Parashath Noah, Laws of Ziziyoth, Page 13-14: 

4. (beginning) Ziziyoth of linen may be affixed to a tallith of any sort of material except wool, since the mixture of linen and wool is prohibited in the Torah (it is called sha'atnez, cf. Devarim, 22:11).  {Our sages z'l (TB. Yevamoth, 4a) derive from the juxtapositioning of the prohibition of sha'atnez (ibid.) and one of the verses referring to the precept of ziziyoth (Devarim, 22:11) that} linen ziziyoth may only be affixed to a woolen tallith when the ziziyoth include the azure-coloured thread called techeleth  {and, since this is no longer available, linen may not be used for ziziyoth}. (after this there is a footnote re techelet which we will include BL"N in the next post).

However, it is correct to follow the opinion of those Authorities who say that linen should not be used for ziziyoth on any sort of tallith, because there are some types of wool that look very much like silk, and people might come to affix linen ziziyoth onto a woolen tallith by mistake, thinking that it is silk.

This learning should be in memory of Maran, HaRav HaGaon Ovadia Yosef, ztz'l.