Anandakanda 1.4.53

1.4.53

athavā dīpikāyantre śuddhaḥ syātpātito rasaḥ /
<nirodhanam>
kadarthito bhavetsūtaḥ svedādyaiḥ pañcakarmabhiḥ //

Alternatively, mercury distilled in a dīpikā apparatus becomes pure. / Restraining [nirodhana] / Quicksilver becomes exhausted by the five operations beginning with steaming;