Key topic for discussion is Bhagavad-gita 3.9.
यज्ञार्थात्कर्मणोऽन्यत्र लोकोऽयं कर्मबन्धनः । तदर्थं कर्म कौन्तेय मुक्तसङ्गः समाचर ॥ ९ ॥
yajñārthāt karmaṇo ’nyatra loko ’yaṁ karma-bandhanaḥ tad-arthaṁ karma kaunteya mukta-saṅgaḥ samācara
Work done as a sacrifice for Viṣṇu has to be performed; otherwise work causes bondage in this material world. Therefore, O son of Kuntī, perform your prescribed duties for His satisfaction, and in that way you will always remain free from bondage.