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.

CC Madhya 22.150, Translation and Purport

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.

This verse is found in the Bhakti-rasāmṛta-sindhu (1.2.272).