204. Final radical n

Combinations of final न् n.

Final radical n is assimilated in internal combination to a following sibilant, becoming anusvāra.

Thus, váṅsi, váṅsva, váṅsat, maṅsyáte, jíghāṅsati.

a. According to the grammarians, it is treated before bh and su in declension as in external combination. But the cases are, at best, excessively rare, and RV. has ráṅsu and váṅsu (the only Vedic examples).

b. Final n of a derivative suffix is regularly and usually dropped before a consonant in inflection and composition—in composition, even before a vowel; and a radical n occasionally follows the same rule: see 421 a, 439, 1203 c, 637.

c. For assimilation of n to a preceding palatal, see 201.

Thus remaining cases are those of external combination.