Bhagavad Gita 18.46

यत्: प्रवृत्तिर्भूतानां येन सर्वमिदं ततम् |
स्वकर्मणा तमभ्यर्च्य सिद्धिं विन्दति मानव:

Translation

By performing one’s natural occupation, one worships the Creator from whom all living entities have come into being, and by whom the whole universe is pervaded. By such performance of work, a person easily attains perfection.