deriv SD cv (1027) ashtadhyayi.com hei.de L 1027 ETT STT a 5.4.91 ALPH OLDHOMEPAGE NEWHOMEPAGE

rAjAhas;sakhibhyaS Tac

राजाहःॱसखिभ्यष्टच् ONPANINI 54091

Add /Tac after rAjan- राजन्, /ahan''- and /sakhi- (when they are ifc).

tri त्रि + /ahan''-
→ tri त्रि + ahan अहन् + /Tac by this rule
→ tri त्रि + ah अह् + a अ by ahnaSTakhor...
→ **tryaha- त्र्यहॱ m "group of three days"

By <<<<< tatpuruSasy... this rule only works on a /tatpuruSa, so it won't apply to

dezo dIrghahA देशो दीर्घहा "a country having long days",

which is a /bahuvrIhi and therefore keeps ahan- अहन्.