Heart Aflame! Old Indian Painting on Cardboard, Presumed Ayurvedic

I presume this painting, Indian Buddhist I believe, was once part of a series illustrating the various chakras of the body; I'd love to have the whole set, but if only one, of course best to have the heart! And all the better with heart aflame, radiating golden light--though I also like that that flame looks a rather like a horn, erect! Perhaps the perfect sort of talisman for one looking for a lover.

9 1/2" x 6 3/8". A combination of ink and watercolor/gouache I believe, on cardboard. Some scattered surface loss as evident but good overall condition, better in person, rich and bold. Later 19th c. or so I would guess.