SB 10.47.25
bhagavaty uttamah-sloke
bhavatibhir anuttama
bhaktih pravartita distya
muninam api durlabha
Translation:
By your great fortune you have established an unexcelled standard of pure devotion for the Lord, Uttamahsloka — a standard even the sages can hardly attain.
Purport:
The term pravartita indicates that the gopis brought to this world a standard of pure love of God that was previously unknown on the earth. Thus Uddhava congratulates them on their unparalleled contribution to the religious life.