atha ca tasmad ubhayathapi hi karmasminn atmanah samsaravapanam
udaharanti.
atha-now; ca-and; tasmat-because of this; ubhayatha api-both in this life and in the next; hi-undoubtedly; karma-fruitive activities; asmin-on this path of sense enjoyment; atmanah-of the living entity; samsara-of material life; avapanam-the cultivation ground or source; udaharanti-the authorities of the Vedas say.