Anandakanda 2.7.21

2.7.21

amlena varjitaṃ cātidīpanaṃ pācanaṃ śubham /
<vartalohaśuddhimāraṇam>
drutamaśvajale kṣiptaṃ vartalohaṃ viśudhyati //

and devoid of sour taste, is extremely appetite-stimulating, digestive, and auspicious. / <Purification and incineration of vartaloha> / Molten and thrown into horse-urine, vartaloha is purified.