Rasendracudamani 4.78

4.78

{nirvāpa}
taptasyāpsu vinikṣepo nirvāpaḥ snapanaṃ ca tat /
{Zeit fṃr pratīvāpa usw.}
pratīvāpādikaṃ kāryaṃ drutalohe sunirmale //

{Nirvāpa}
The casting of a heated [metal] into water is quenching and bath;
{Time for pratīvāpa, etc.}
Pratīvāpa and so forth should be performed when the molten metal is thoroughly pure.