Proto-MSA

*nkˁ - to come (Kogan 2015:565)

The origin is uncertain.

Mehri
nūka - to come (ML 293)
Jibbali
níkaˁ - to come (JL 187)
While zaḥám is the basic verb with meaning “to come”, níkaˁ is commonly used in the JLO corpus (see Kogan 2015:495) for details.