Anandakanda 2.1.119

2.1.119

ruddhvā dhmāte patet sattvaṃ śukatuṇḍanibhaṃ śubham /
<ṣaṣṭhaḥ prakāraḥ>
mūtravargāmlavargābhyāṃ dvisaptāhaṃ vibhāvayet //

sealed and blown, an auspicious essence resembling a parrot's beak will fall out.
<The sixth method>
One should impregnate it for two weeks with the group of urines and the group of acids;