deriv LSK ETT STT aSTA ALPH OLDHOMEPAGE NEWHOMEPAGE
The third ending shows instrument and company:
zarair bhinatti शरैर्भिनत्ति "splits with arrows"
putreNa gacchati पुत्रेण गच्छति "goes with son"
It is also used after the doer of a verb when the verb linksto the object:
azvo dRSTo rAmeNa अश्वो दृष्टो रामेण "horse was seen by rAma", here azvaH अश्वः is the object
See also use of cases.