Śukadeva Gosvāmī continued: Thereafter, my dear King Parīkṣit, O best protector of the Kuru dynasty, Nanda Mahārāja appointed the local cowherd men to protect Gokula and then went to Mathurā to pay the yearly taxes to King Kaṁsa.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
गोपान् गोकुलरक्षायां निरूप्य मथुरां गतः । नन्दः कंसस्य वार्षिक्यं करं दातुं कुरूद्वह
gopān gokularakṣāyāṃ nirūpya mathurāṃ gataḥ | nandaḥ kaṃsasya vārṣikyaṃ karaṃ dātuṃ kurūdvaha
SB 10.5.19