Srimad-Bhagavatam: Canto 8 - Chapter 1 - Verse 49
Sanskrit:
वर्जयेदसदालापं भोगानुच्चावचांस्तथा ।अहिंस्र: सर्वभूतानां वासुदेवपरायण: ॥ ४९ ॥
ITRANS:
varjayed asad-ālāpaṁbhogān uccāvacāṁs tathāahiṁsraḥ sarva-bhūtānāṁvāsudeva-parāyaṇaḥ
Translation:
During this period, one should not unnecessarily talk of material subjects or topics of sense gratification, one should be completely free from envy of all living entities, and one should be a pure and simple devotee of Lord Vāsudeva.