Q. I always wondered why when we daily check the tzitzis of a taalis or smaller begged to see if they are complete and if the knots are loose we tighten them as required, why don’t we do the same to the upper part of the threads that are connected like a loop to the taalis or begged?

A. Mishna Berura (8: 21) rules that one should also check the upper part of the threads that are connected like a loop to the taalis or beged, since even a single string tear would disqualify them. However, in Biur Halocho he is more lenient and suggests to check them there only periodically as it is a more protected area and it is uncommon for them to tear.

Eishel Avrohom also maintains to be lenient since it unusual that a tear should happen in the upper part. (see also Igrois Moshe 4: 21).
Horav Shlomo Miller’s Shlit’a opinion is similar.

Rabbi A. Bartfeld as revised by, Horav Dovid Pam, Horav Aharon Miller, Horav Chanoch Ehrentreu and Horav Kalman Ochs Shlit’a