प्रावोचं भक्तियोगस्य स्वरूपं ते चतुर्विधम् । कालस्य चाव्यक्तगतेर् यो ऽन्तर्धावति जन्तुषु ॥ ३७ ॥
pravocam bhakti-yogasya
svarupam te catur-vidham
kalasya cavyakta-gater
yo 'ntardhavati jantusu
pravocam-explained; bhakti-yogasya-of devotional service; sva-rupam-the identity; te-to you; catuh-vidham-in four divisions; kalasya-of time; ca-also; avyakta-gateh-the movement of which is imperceptible; yah-which; antardhavati-chases; jantusu-the living entities.