deriv SD cv (560) ashtadhyayi.com hei.de L 560 ETT STT a 3.1.30 ALPH OLDHOMEPAGE NEWHOMEPAGE

kamer NiG कमेर्णिङ् ONPANINI 31030

/NiG comes after kami कमि without change of meaning.

kamer dhAtoH NiG pratyayo bhavati कमेर्धातोः णिङ्प्रत्ययो भवति. NakAro vRddhyarthaH णकारो वृद्ध्यर्थः. GakAra AtmanepadArthaH ङकार आत्मनेपदार्थः. kAmayate कामयते, kAmayete कामयेते, kAmayante कामयन्ते.

The /Nit in "NiG" causes /vRddhi, and the /Git makes the verb /AtmanepadI.

kam कम् + /NiG + /laT
→ kAm काम् + i इ + /laT by ata::upadh...
→ kAmi कामि + /zap + /laT with kartarizap because kAmi कामि is a root by sanAdyantAdh... >>
→ kAme कामे + /zap + /laT with /guNa by sArvadhAtuk...
→ kAmaya कामय + /laT with /guNa by ecoyavAyAvaH
→ kAmaya कामय + /ta by lasya, with /Atmanepada by anudAttaG...
→ !**kAmayate कामयते "he wants"

Is this /Ni compulsory after kam कम्?

Sure is. Rule AyAdaya::... > makes /NiG optional before soft, but /zap is hard. So *kamati कमति is forbidden. MMW p. 252 says "not used in the conjugational tenses".