Anandakanda 1.23.72

1.23.72

evaṃ kṛte saptavāraṃ raso bhasmatvam āpnuyāt /
<ekādaśaḥ prakāraḥ>
aṅkolasya śiphānīraiḥ sūtaṃ gandhaṃ samaṃ samam //

When this is done seven times, the mercury becomes calcinated.
<The Eleventh Method>
Quicksilver and sulphur in equal parts, with root-juice of aṅkola,