Verse 18

अन्तःसङ्गविहीनास्तु यथा स्नेहा दृषज्जले ।तथासक्तमनोवृत्तौ बाह्यभोगानुभूतयः

In plain words

Just as drops of oil on stone or on water are devoid of inner attachment, so, where the working of the mind is unattached, are the experiences of outer enjoyments.