Must one wash their hands if another person cut his nails?<a href="#_ftn1" name="_ftnref1">[1]</a>
Yes.
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<a href="#_ftnref1" name="_ftn1">[1]</a> Ashel Avraham Butchach Mahadurah Tinyana 4:18; Kaf Hachaim 4:68 and 4:92

Shulchan Aruch HaRav | ❓Must one wash their hands if another person cut his nails?

Must one wash their hands if another person cut his nails?[1] Yes. [1] Ashel Avraham Butchach Mahadurah Tinyana 4:18; Kaf Hachaim 4:68 and 4:92