Vaishnava Samhita. Narasimha Mehta Charitam I. Vol III Book VI Chp 15 Shlokas 25 - 26

रुद्र उवाच 
अभयं ते महाबुद्धे भक्त्याsहं ते वशीकृतः |
ददामि कामितं तुभ्यं त्वं किमिच्छासि बालकः ||
मृकण्डुतनयः पूर्वं मामाश्रित्य महामतिः |
जितवान् दुस्तरं मृत्युं लेभे भक्तिं तथा हरौ ||  

Shri Rudra said

Oh, wise one assured of My mercy. I am pleased with your bhakti. My child! I am ready to give you whatever you want. Long ago, the most intelligent Markandeya surrendered to Me and conquered even death. He acquired Hari-bhakti too.