Anandakanda 2.6.36

2.6.36

catustulyaṃ pūrvanāgaṃ viṃśatyekapuṭaiḥ pacet /
dvipuṭaṃ ciñcikakṣārair deyaṃ vāśārasānvitaiḥ //

[in an amount] equal to one-fourth of the aforesaid lead, one should calcinate it with twenty-one puṭas.
Two puṭas should be given with alkalis of ciñcikā combined with vāsā juice.