Rasamanjari 5.2

5.2

<metals:: śodhana>
taile takre gavāṃ mūtre kvāthe kaulatthakāñjike /
taptaṃ taptaṃ niṣecettu tattaddrāve tu saptadhā //

<Metals: Purification>
In oil, buttermilk, cow's urine, horsegram decoction, and sour gruel, / heated repeatedly, one should quench [it] in each liquid seven times.