SB 3.4.36
kalindyah katibhih siddha
ahobhir bharatarsabha
prapadyata svah-saritam
yatra mitra-suto munih
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
After passing a few days on the bank of the river Yamuna, Vidura, the self-realized soul, reached the bank of the Ganges, where the great sage Maitreya was situated.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Thus end the Bhaktivedanta purports of the Third Canto, Fourth Chapter, of the Srimad-Bhagavatam, entitled “Vidura Approaches Maitreya.”