Paul Davidowitz asks:
https://dafyomi.co.il/nedarim/tosfos/nd-ts-030.htm#:~:text=say%20that%20the-,Mishnah,-teaches%20%22this%2C%20and
Perhaps he is forced to say that the Mishnah teaches
It should be-
Perhaps he is forced to say that the Braisa teaches
The Kollel replies:
Yes, Paul you are right. (The Mishnah does often say also, "Zu v'Ein Tzarich Lomar Zu," but here we are discussing a Beraisa.)
Kol Tuv,
Dovid Bloom