Vaishnava Samhita. Dhruvadasa Charitam. Vol II Book VI Chp 7 Shlokas 36 - 37

ध्रुवदास उवाच 

का त्वं जननि वात्सल्यात् करोषि प्रेमलालनम्  |
सुखञ्च वर्धयस्येवं पितृभ्यां रहितस्य मे   ||
ध्रुवस्य चरितं श्रुत्वा कृष्णदर्शनकाङ्क्षया  |
अहमागतवानत्र तपःकर्तुं दृढव्रतः  ||

Dhruvadasa said

Oh! Mother! Who are you? You are showering affection on me, an orphan, and giving me such a great pleasure. Inspired by the story of young Dhruva, I developed a great desire to have Krishna darshan. With unaltered faith I have come here to do penance.