Anandakanda 2.1.157

2.1.157

<caturthaḥ prakāraḥ>
dhānyābhraṃ mardayedamlairgharme saṃsthāpayettataḥ /
puṭaṃ kuryāttato'mlena secanaṃ mardanaṃ punaḥ //

<Fourth method>
One should grind prepared mica with sours and then keep it in the sun; / One should subject it to calcination, and then moisten and grind it again with sour [liquid].