sAhacaryaM Companionship, (constant) fellowship or association, living together, concomitance; kiM na smarasi yadekatra no vidyAparigrahAya nAnAdigaMtavAsinAM sAhacaryamAsIt ( pb ) Māl. 1 ; Ku. 3. 21 , R. 16. 87 , Ve. 1. 20 , Śi. 15. 24. Comp. — niyamaH a rule of invariable concomitance.