anudvega-karam — not agitating; vākyam — words; satyam — truthful; priya — dear; hitam — beneficial; ca — also; yat — which; svādhyāya — of Vedic study; abhyasanam — practice; ca — also; eva — certainly; vāk-mayam — of the voice; tapaḥ — austerity; ucyate — is said to be.