SB 1.14.1

sūta uvāca
samprasthite dvārakāyāṁ
 jiṣṇau bandhu-didṛkṣayā
jñātuṁ ca puṇya-ślokasya
 kṛṣṇasya ca viceṣṭitam
sūtaḥ uvāca — Śrī Sūta Gosvāmī said; samprasthite — having gone to; dvārakāyām — the city of Dvārakā; jiṣṇau — Arjuna; bandhu — friends and relatives; didṛkṣayā — for meeting them; jñātum — to know; ca — also; puṇya-ślokasya — of one whose glories are sung by Vedic hymns; kṛṣṇasya — of Lord Kṛṣṇa; ca — and; viceṣṭitam — further programs of work.
Śrī Sūta Gosvāmī said: Arjuna went to Dvārakā to see Lord Śrī Kṛṣṇa and other friends and also to learn from the Lord of His next activities.

As stated in Bhagavad-gītā, the Lord descended to the earth for the protection of the faithful and annihilation of the impious, so after the Battle of Kurukṣetra and establishment of Mahārāja Yudhiṣṭhira, the mission of the Lord was complete. The Pāṇḍavas, especially Śrī Arjuna, were eternal companions of the Lord, and therefore Arjuna went to Dvārakā to hear from the Lord of His next program of work.