Anandakanda 1.5.78

1.5.78

pañcamo'tha caturthāṃśe ṣaṣṭho dvyaṃśe prakīrtitaḥ /
śatāṃśe saptamo jñeyo grāsamānaṃ rasasya tu //

and the fifth in a fourth part, the sixth is declared in a half part; / the seventh should be known in a hundredth part: [such is] the measure of a morsel for mercury.