deriv SD cv (788) ashtadhyayi.com hei.de L 788 ETT STT a 1.3.45 ALPH OLDHOMEPAGE NEWHOMEPAGE

akarmakAc ca अकर्मकाच्च ONPANINI 13045

/jJA gets bent endings when objectless.

Even when the fruit of the action does not accrue to the agent.

jJA ज्ञा is objectless in several senses, AFI when it means pravartate प्रवर्तते "engages" —

sarpiSopAyena pravartate सर्पिषोपायेन प्रवर्तते "he engages (in sacrifice) by means of ghee"
→ **sarpiSas सर्पिषस् **jAnIte जानीते
→ sarpiSo jAnIte सर्पिषो जानीते

By jJovidarthasy..., the instrument of jJA ज्ञा takes sixth case, not third, so we have here sarpiSas सर्पिषस्, not sarpiSA सर्पिषा.