S"A O"Ch 10:7
BH"T 9, 10
Sha'ar Hatziyyun 34,35
Citing L'vush MGA, Eliyah Rabbah etc.
In a recent M"B Yomit I came across the case of a a beged "Hetzyo satum and Hetzyo patu'ach"
In this case one is hayyav b'tzitzit missafeik, no b'rachah is made, and one may not wear them outside on Shabbat. The Acharonim dispute if this prohibition applies to Carmelit or not.
Given, since these Tzitzit are a Hiyyuv [albeit misafeik]
Q: Now why are the Tzitziyot deemed a Massuy, a burden? Since one is Hayyav to have them, shouldn't that obviate them being a massuy?
Best Wishes for 5773!