When fire is not to be had, gold is used as a substitute. Guided by the marks of the auditions of the Veda, one who is conversant with authorities and who knows the identity of gold with fire, acts thus.
अग्न्यभावे च कुरुते वह्निस्थानेषु काञ्चनम्। जामदग्न्य प्रमाणज्ञो वेदश्रुतिनिदर्शनात्॥