Vaishnava Samhita. Raskhan Charitam. Vol III Book VII Chp 13 Shlokas 12 - 13

कश्चिदासीन्महाभागो रसखान इति श्रुतः |

यवनो धनिकश्रेष्ठः सर्वसद्गुणसम्युतः |

स कदाचिद्भाग्यवशादगमन्मधुरापुरीम् |

तत्रापश्यत्सभां म्लेच्छो महाजनसमन्वितम् ||

There was a muslim named Raskhan who was very rich and endowed with all noble qualities. As good luck would have it, once he reached Mathura and saw a great gathering of learned men.