If a tzitzit string is knotted back together after tearing, does the knotted string restore validity?

What minimum length must remain on a torn tzitzit string for the tzitzit to remain kosher?

5 opinions

When two ends of tzitzit tear, is it definitively invalid or does it depend on whether the ends come from the same string?

2 opinions

When a string tears and both ends have insufficient length individually, but combined they have k'dei anivah, is the tzitzit valid?

2 opinions

If a string tears at its very root (the point where it attaches to the corner of the garment), is the tzitzit invalid even if remnants exist?

2 opinions

If kosher tzitzit are removed from one garment, may they be re-attached to a different garment?

1 opinions

How is k'dei anivah (the minimum remaining length) measured when the strings are unusually thick?

3 opinions

From where must the minimum remaining length (k'dei anivah) be measured — from the anaf (branch/hanging section) or may it include the gedil (wound/twisted section)?

5 opinions across 3 eras

When relying on Rabbeinu Tam's standard (two complete strings required), is it preferable to seek replacement tzitzit or may one simply continue wearing the current pair?

2 opinions