If out of love, hate or fear an embodied soul fixes his mind with intelligence and complete concentration upon a particular bodily form, he will certainly attain the form that he is meditating upon.
Srimad Bhagavata Purana
श्रीमद्भागवतमहापुराणम्
मूल श्लोकः
यत्र यत्र मनो देही धारयेत्सकलं धिया । स्नेहाद्द्वेषाद्भयाद्वापि याति तत्तत्स्वरूपताम्
yatra yatra mano dehī dhārayetsakalaṃ dhiyā | snehāddveṣādbhayādvāpi yāti tattatsvarūpatām
SB 11.9.22