It is the mind that at first inclines the Soul to Yoga. The latter then merges the former into itself. When the Soul gains success in Yoga, it then sees itself invested with qualities.
मनः प्रणयतेऽऽत्मानं स एनमभियुञ्जति। युक्तो यदा स भवति तदा तं पश्यते परम्॥