This verse is found in the Bhakti-rasāmṛta-sindhu (1.2.272).
When one becomes attached to the Supreme Personality of Godhead according to one's natural inclination to love Him and is fully absorbed in thoughts of the Lord, that state is called transcendental attachment
Expressions researched:
"When one becomes attached to the Supreme Personality of Godhead according to one’s natural inclination to love Him and is fully absorbed in thoughts of the Lord, that state is called transcendental attachment"
Sri Caitanya-caritamrta
CC Madhya-lila
When one becomes attached to the Supreme Personality of Godhead according to one’s natural inclination to love Him and is fully absorbed in thoughts of the Lord, that state is called transcendental attachment, and devotional service according to that attachment is called rāgātmikā, or spontaneous devotional service.
When one becomes attached to the Supreme Personality of Godhead according to one’s natural inclination to love Him and is fully absorbed in thoughts of the Lord, that state is called transcendental attachment, and devotional service according to that attachment is called rāgātmikā, or spontaneous devotional service.