Fire, enveloped in smoke at the time of its being ignited, and thereafter throwing out scintillation's, with its brightness obscured by vapour, does not increase adequately even n oblations being poured into it with Mantras,
सस्फुलिङ्गः सधूमार्चिः सधूमकलुषोदयः। मन्त्रसङ्घहुतोऽप्यग्निर्न सम्यगभिवर्धते॥