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.