When Vasudeva heard that Nanda Mahārāja, his very dear friend and brother, had come to Mathurā and already paid the taxes to Kaṁsa, he went to Nanda Mahārāja’s residence.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
वसुदेव उपश्रुत्य भ्रातरं नन्दमागतम् । ज्ञात्वा दत्तकरं राज्ञे ययौ तदवमोचनम्
vasudeva upaśrutya bhrātaraṃ nandamāgatam | jñātvā dattakaraṃ rājñe yayau tadavamocanam
SB 10.5.20