Śrī Caitanya Caritamrta · Text Madhya 14.160
গোপীগণ-মধ্যে শ্রেষ্ঠা রাধা-ঠাকুরাণী ।
নির্মল-উজ্জ্বল-রস-প্রেম-রত্নখনি ॥ ১৬০ ॥
gopī-gaṇa-madhye śreṣṭhā rādhā-ṭhākurāṇī
nirmala-ujjvala-rasa-prema-ratna-khani
“Of all the gopīs, Śrīmatī Rādhārāṇī is the chief. She is a jewel mine of ecstatic love and the source of all purified transcendental conjugal mellows.
Read this verse on Vedabase.ioThis verse has no purport; its meaning is explained by the verses around it.