Vaishnava Samhita. Shri Vyasadasa Charitam I. Vol II Book VI Chp 2 Shlokas 31 - 35

ब्राह्मण उवाच

तयक्तवेदकुलाचारा लोकधर्मातिवर्तिनी 
निष्फला विष्णुभक्तिर्हि न प्रीणाति हरिस्तया  ||

व्यासदास उवाच 

वैदिकञ्च न जानामि लौकिकञ्च न वेद्म्यहम् 
जानामि केवलं प्रेम राधामाधवयोः सदा  ||
सफला वा निष्फला वा मम भक्तिर्हि वेद्मि च 
न मे फलाभिसन्धिश्च दास्ये राधामुकुन्दयोः  ||
संप्राप्य राधिकादास्यं सफलं जीवितं मम 
केवलं प्रेममुग्धोsहमुन्मत्तोस्मि द्विजोत्तम   ||
यत्सुखं कृपया शौरेः संप्राप्तमिह जन्मनि 
जन्मजन्मनि तन्मे स्यादिति त्वं देहि मे वरम्  ||   

The brahmana said

Developing devotion for Lord Hari against all rules of dharma and Vedic rituals is fruitless. Shri Bhagavan will never be pleased with it.

Vyasadasa said

I have no knowledge of earthly practices, nor do I have any idea of Vedic rituals. I have the knowledge of loving devotion to Shri RadhaKrishna alone. I am not worried as to whether my bhakti is fruitful or not. Also I am not concerned about any other benefit that accrues due to my service to Shri Radha and Krishna. Having obtained the coveted service of Shri Radha and Krishna my life has become meaningful. Oh, distinguished brahmana! I am simply mad with the intoxication born of the power of prem. I have derived, great pleasure and comfort out of Krishna bhakti. I wish to have the same in each of my successive births. Please bless me so.