चतुर्युगेष्वथ व्यस्ता द्वापरादौ महर्षिभि: ॥ ४६ ॥
catur-yugeṣv atha vyastā
te — these Vedas; paramparayā — by continuous disciplic succession; prāptāḥ — received; tat-tat — of each succeeding generation; śiṣyaiḥ — by the disciples; dhṛta-vrataiḥ — who were firm in their vows; catuḥ-yugeṣu — throughout the four ages; atha — then; vyastāḥ — were divided; dvāpara-ādau — at the end of the Dvāpara millennium; mahā-ṛṣibhiḥ — by great authorities.
In this way, throughout the cycles of four ages, generation after generation of disciples — all firmly fixed in their spiritual vows — have received these Vedas by disciplic succession. At the end of each Dvāpara-yuga the Vedas are edited into separate divisions by eminent sages.