Srimad-Bhagavatam: Canto 11 - Chapter 1 - Verse 13

Sanskrit:

यदेतरौ जयेत् सत्त्वं भास्वरं विशदं शिवम् ।तदा सुखेन युज्येत धर्मज्ञानादिभि: पुमान् ॥ १३ ॥

ITRANS:

yadetarau jayet sattvaṁbhāsvaraṁ viśadaṁ śivamtadā sukhena yujyetadharma-jñānādibhiḥ pumān

Translation:

When the mode of goodness, which is luminous, pure and auspicious, predominates over passion and ignorance, a man becomes endowed with happiness, virtue, knowledge and other good qualities.

Purport:

One can control one’s mind and senses in the mode of goodness.