deriv SD cv (613) ashtadhyayi.com hei.de L 613 ETT STT a 2.4.52 ALPH OLDHOMEPAGE NEWHOMEPAGE

aster bhUH अस्तेर्भूः ONPANINI 24052

Replace /as with bhU भू before soft.

The /liT is soft by liTca —

as अस् + /liT
→ bhU भू + /liT by this rule
→ babhUva बभूव "was", see bhavateraH for details.

/tAs and /sya are soft by tiGzitsArvadh..., so they cause gbS —

**kartA' कर्ताऽ "gonna do"

bhU भू + /luT /tip OR /ta → !**bhavitA भविता "gonna be"

**bhaviSyati भविष्यति "will be"

Therefore the s स् of /as only stays before hard affixes —

!**astu अस्तु with /loT

But /as also loses the a अ by !! .

!**stAm स्ताम्

!**santu सन्तु