Anandakanda 2.1.126

2.1.126

<navamaḥ prakāraḥ>
saṃcūrṇya mākṣikaṃ śuddhaṃ mardyamamlena kenacit /
kṣālayedāranālena hyadhaḥsthaṃ svarṇacūrṇavat //

<The ninth method>
Thoroughly powdering pure mākṣika, it is to be ground with some sour liquid; / one should wash with sour rice gruel the part that stays at the bottom like gold powder;