Anandakanda 1.24.112

1.24.112

hemnā saha samāvartya sāraṇātrayasāritam /
sahasrāṃśena tenaiva śulbavedhaṃ pradāpayet //

having smelted it together with gold and led [it] through three transfers, / with a one-thousandth part of it one should effect the piercing of copper;