Vaishnava Samhita. Katha Sangraham. Vol III Book VI Chp 25 Shloka 3

द्वितीये व्यासदासस्तु विच्छिन्नं नूपुरं श्रियः  |
बबन्ध स्वोण्वीतेन विशुद्धप्रेमतत्परः  ||

The Second Chapter goes like this. Due to his pious prem, Shri Vyasadasa tied the broken anklet of Devi Radha with his sacred-thread.