deriv SD cv (1124) ashtadhyayi.com hei.de L 1124 ETT STT a 7.4.27 ALPH OLDHOMEPAGE NEWHOMEPAGE
Replace R ऋ with rIG रीङ् (before /cvi or a soft non-/kRt that starts with y य्).
**mAtR- मातृॱ + /kyac + /laT /tip → !**mAtrIyati मात्रीयति
**mAtR- मातृॱ + /kyaG + /laT /ta → !**mAtrIyate मात्रीयते.
Why do we say R ऋ?
RR ॠ is unaffected —
kRR कॄ → !**cekIryate चेकीर्यते
cvau ca < | 74027 rIG RtaH | > riG za;yag;liGkSu |
saMskRtaM bhakSAH <<< | L 1124 | >>> tasya samUhaH |