Meaning
Supreme God Krishna spoke
When a person passes away with the predominance of the Passional Mode of Nature (RajoGuna), they are reborn as a {human} being with a strong inclination toward worldly actions. Conversely, departing during the dominance of the Dark Mode (TamoGuna) results in rebirth into lower species. (14:15)
Sanskrit
श्रीभगवान् उवाच
रजसि प्रलयं गत्वा कर्मसङ्गिषु जायते ।
तथा प्रलीनस्तमसि मूढयोनिषु जायते॥
Word-by-word
रजसि प्र-लयम् गत्वा कर्मसङ्गिषु जायते;
तथा प्र-लीनः तमसि मूढ-योनिषु जायते।