Cc Ādi 4.206
Text
lakṣaṇaṁ bhakti-yogasya
nirguṇasya hy udāhṛtam
ahaituky avyavahitā
yā bhaktiḥ puruṣottame
nirguṇasya hy udāhṛtam
ahaituky avyavahitā
yā bhaktiḥ puruṣottame
Synonyms
lakṣaṇam-the symptom; bhakti-yogasya-of devotional service; nirguṇasya-beyond the three modes of nature; hi-certainly; udāhṛtam-is cited; ahaitukī-causeless; avyavahitā-uninterrupted; yā-which; bhaktiḥ-devotional service; puruṣottame-to the Supreme Personality of Godhead.
Translation
"These are the characteristics of transcendental loving service to Puruṣottama, the Supreme Personality of Godhead: it is causeless, and it cannot be obstructed in any way.