SB 1.14.1
suta uvaca
samprasthite dvarakayam
jisnau bandhu-didrksaya
jñatum ca punya-slokasya
krsnasya ca vicestitam
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
Sri Suta Gosvami said: Arjuna went to Dvaraka to see Lord Sri Krsna and other friends and also to learn from the Lord of His next activities.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
As stated in Bhagavad-gita, the Lord descended to the earth for the protection of the faithful and annihilation of the impious, so after the Battle of Kuruksetra and establishment of Maharaja Yudhisthira, the mission of the Lord was complete. The Pandavas, especially Sri Arjuna, were eternal companions of the Lord, and therefore Arjuna went to Dvaraka to hear from the Lord of His next program of work.