Is there any problem with the tzizis of a tallis gadol touching the ground? For example if you are sitting in shule and the tzizis touch the ground, is that a halachic problem?
Shulchan Aruch states that tzitzis should not be dragged [on the ground] while the tallis is worn.
Magen Avraham suggests that this might apply only while the tallis is being worn, but not when it is not worn. However, Shulchan Aruch Harav (21:5) omits the term “while they are worn,” implying that one should always be wary of dragging tzitzis strings on the ground. This is also stated in Birkei Yosef.
However, Mekor Chaim (21) writes that the instruction to avoid dragging tzitzis on the ground is only out of midas chassidus.
See also Aruch Hashulchan (21:7) and Kaf Hachaim (21:18).