Rasendracudamani 4.73

4.73

{dvaṃdvana}
dravyayormelanaṃ dhmānād dvaṃdvanaṃ parikīrtitam /
{??}
bhāgādrūpyādike kṣepamanuvarṇasuvarṇake //

{Dvaṃdvana}
The union of two substances by blowing is proclaimed as dvaṃdvana;
{...}
[as to] adding a fraction into silver and so on to inferior gold and gold,