When the Brahmanas pour sacrificial libations on fire, it now becomes blue or red or yellow. Its flame turns towards the left, and produces a bad odor accompanied by loud sounds.
नीललोहितपीतश्च भवत्यग्निर्हतो द्विजैः॥ वामाचिर्दुष्टगन्धश्च मुञ्चन् वै दारुणं स्वनम्।