Sri Baladeva Vidyabhusana, a great Vaisnava scholar, defines this as bhagavad-arcana-rupaika-niskama-karmabhir visuddha-cittah - accepting transcendental loving service to the Lord as the prime duty, free from fruitive reaction

Expressions researched:
"Śrī Baladeva Vidyābhūṣaṇa, a great Vaiṣṇava scholar, defines this as bhagavad-arcanā-rūpaika-niṣkāma-karmabhir viśuddha-cittaḥ—accepting transcendental loving service to the Lord as the prime duty, free from fruitive reaction"

Srimad-Bhagavatam

SB Canto 2

"Religion, economic development and sense gratification are celebrated as three means of attaining the path of salvation. Of these, īkṣā trayī especially, i.e., knowledge of the self, knowledge of fruitive acts and logic and also politics and economics, are different means of livelihood. All these are different subjects of Vedic education, and therefore I consider them temporary engagements. On the other hand, surrendering unto the Supreme Lord Viṣṇu is a factual gain in life, and I consider it the ultimate truth." (SB 7.6.26)

The whole matter is concluded in the Bhagavad-gītā (BG 2.41) as vyavasāyātmikā buddhiḥ, or the absolute path of perfection. Śrī Baladeva Vidyābhūṣaṇa, a great Vaiṣṇava scholar, defines this as bhagavad-arcanā-rūpaika-niṣkāma-karmabhir viśuddha-cittaḥ—accepting transcendental loving service to the Lord as the prime duty, free from fruitive reaction.

SB 2.4.3-4, Translation and Purport

O great sages, the great soul Mahārāja Parīkṣit, constantly rapt in thought of Lord Kṛṣṇa, knowing well of his imminent death, renounced all sorts of fruitive activities, namely acts of religion, economic development and sense gratification, and thus fixed himself firmly in his natural love for Kṛṣṇa and asked all these questions, exactly as you are asking me.

The three activities of religion, economic development and sense gratification are generally attractive for conditioned souls struggling for existence in the material world. Such regulated activities prescribed in the Vedas are called the karma-kāṇḍīya conception of life, and householders are generally recommended to follow the rules just to enjoy material prosperity both in this life and in the next.