There are two classes which are permitted, on a reciprocal basis only, to marry from one into the other. These are: Mattari and Kararu, or Kulpiri and Tidinwa. Adherents of one [and the same] class call each other neji
brothers
The names Kulpiri and Tidniwa are the Jandruwonta equivalents of the Matteri and Kararu class names of the Diari, etc. (idem, p.91).