Bhagwad Gita
Chapter 14, Verse 19
नान्यं गुणेभ्यः कर्तारं यदा द्रष्टानुपश्यति।गुणेभ्यश्च परं वेत्ति मद्भावं सोऽधिगच्छति।।14.19।।
When you see that there is nothing beyond these modes of nature in all activities and that the Supreme Lord is transcendental to all these modes, then you can know My spiritual nature.