Śrī Caitanya Caritamrta · Text Ādi 4.206
লক্ষণং ভক্তিযোগস্য নির্গুণস্য হ্যুদাহৃতম্ ।
অহৈতুক্যব্যবহিতা যা ভক্তিঃ পুরুষোত্তমে ॥ ২০৬ ॥
lakṣaṇaṁ bhakti-yogasya
nirguṇasya hy udāhṛtam
ahaituky avyavahitā
yā bhaktiḥ puruṣottame
“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.
Read this verse on Vedabase.ioThis verse has no purport; its meaning is explained by the verses around it.