Verse 19

तृष्णयाशयकौशिक्या हृद्यमङ्गलभूतया । ।रूढया भगवानेष विष्णुर्वामनतां गतः

In plain words

By tṛṣṇā — the owl (kauśikī) of the heart, become pleasing and auspicious, grown deep-rooted — this Bhagavān Viṣṇu came to dwarfhood.