Question:
Dear Rabbi,
If I am saying tachanun, specifically Nefilat Apayim, and the shliach tzibur starts to recite kedusha, what is the correct practice? Do I stop, stand up and answer kedusha and then sit back down and continue with Nefilat Apayim?
Thank you in advance.
Answer:
Hello,
You would answer kedusha, (and according to some poskim only the verses of kadosh and boruch) even if it means standing up and answering, and then continue with the nefilam apayim.
Best wishes
Sources:
Mishna Berura 131-1, Kaf Hachaim 131-2, Piskei teshuvos 131-2.