While performing duties according to the order of Śrī Kṛṣṇa, the Supreme Personality of Godhead, one constantly remembers Him, His names and His qualities.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
कुर्वाणा यत्र कर्माणि भगवच्छिक्षयासकृत् । गृणन्ति गुणनामानि कृष्णस्यानुस्मरन्ति च
kurvāṇā yatra karmāṇi bhagavacchikṣayāsakṛt | gṛṇanti guṇanāmāni kṛṣṇasyānusmaranti ca
SB 1.5.36