deriv SD cv (527) ashtadhyayi.com hei.de L 527 ETT STT a 6.1.96 ALPH OLDHOMEPAGE NEWHOMEPAGE

usy a-padAntAt

उस्यॱपदान्तात् ONPANINI 61096

Merge non-padafinal a अ A आ with /us /jus into the latter.

So when adding /yAsuT in front of /jus —

hard liG /jhi
→ /jus by jherjus
→ yAs यास् + us उस् by yAsuTparasm...
→ yA या + us उस् by liGassalop...
→ y य् + us उस् by this rule
→ **yus युस् "they would V", as in **dviSyus द्विष्युस् "they'd hate".

Also in the /liT —

dhA धा+ /liT /jhi
→ **dadhA- दधाॱ + /us
→ **dadhus दधुस्

Why do we say non-padafinal?

Because this only applies to the affixes /us and /jus. Between words, <9 AdguNaH applies normally —

**yathA + usras → !**yathosraH "like an ox"