Vaishnava Samhita. Shri Surdas Charitam. Vol III Book VII Chp 5 Shlokas 7 - 8

विचिन्वन् गायकं तत्र ददर्शैवाविदूरतः |

पितृभ्यां रहितञ्चान्धं सूरदासं तु बालकम् ||

आदाय तं महाभागं वात्सल्येनैव वल्लभः |

चकार ब्रह्मसम्बन्धं तस्य च प्रेमपूर्वकम् ||

Shri Vallabha came in search of the unknown singer. He at last saw the blind and orphan child Surdas. Shri Vallabha took the fortunate child to his place with all affection. He gave him the Deeksha of Brahmasambandam (closeness to the Brahman), and made him stay with himself