Such flowers as have keen energy, as are painful to the touch, as grow on trees and plants having thorns, and as are either bloodyred or black, should be offered to (evil) spirits an unearthly beings.
तीक्ष्णवीर्यास्तु भूतानां दुरालम्भाः सकण्टकाः। रक्तभूयिष्ठवर्णाश्च कृष्णाश्चैवोपहारयेत्॥