deriv SD cv (217) ashtadhyayi.com hei.de L 217 ETT STT a 7.3.112 ALPH OLDHOMEPAGE NEWHOMEPAGE

AN nadyAH आण्नद्याः ONPANINI 73112

After a /nadI,
(replace /Ge /Gasi /Gas)
with
ai ऐ As आस् As आस्.

Bases like kumArI- कुमारीॱ vadhU- वधूॱ are always /nadI —

**kumArI- कुमारीॱ + /Ge
→ **kumArI- कुमारीॱ + ai ऐ
→ !**kumAryai कुमार्यै "to girl"

**nadI- नदीॱ + /Gasi
→ **nadI- नदीॱ + As आस्
→ **nadyAs नद्यास् "from river"

**vadhU- वधूॱ + /Gas
→ **vadhU- वधूॱ + As आस्
→ !**vadhvAs वध्वास् "of wife"

Bases like mati- मतिॱ f zuci- शुचिॱ f zrI- श्रीॱ f are /nadI before /Ge etc. if we apply the optional Gitihrasvazca —

**mati- मतिॱ f + /Ge → mati- मतिॱ + ai ऐ → !**matyai मत्यै

**zuci- शुचिॱ f + /Ge → zuci- शुचिॱ + ai ऐ → !**zucyai शुच्यै

zrI- श्रीॱ f + /Ge
→ zriy- श्रिय् + /Ge by aciznudhAt...
→ zriy- श्रिय् + ai ऐ by this rule
→ !**zriyai श्रियै "to lakSmI लक्ष्मी"

but not otherwise —

**mati- मतिॱ f + /Ge → **mataye मतये by < gherGiti , like **RSaye ऋषये

**zuci- शुचिॱ f + /Ge → !**zucaye शुचये

zrI- श्रीॱ f + /Ge
→ zriy- श्रिय् f + /Ge by aciznudhAt...
→ !**zriye श्रिये "to lakSmI लक्ष्मी"

and a few feminine I ई U ऊ enders are never /nadI —

grAmaNI- ग्रामणीॱ f + /Ge → grAmaNye ग्रामण्ये

How's the original sUtra worded?

It is /AT + nadyAH नद्याः, "the Git endings after a /nadI get /AT". Rule ATazca says that the effect of getting /AT is replacing the first vowel with /vRddhi. So /Ge becomes ai ऐ, and /Gas /Gasi become As आस्.

Shouldn't that make /Gi into ai ऐ too?

It should, but GerAmnadyAmn... >>>> makes /Gi into Am आम् instead.