Anandakanda 2.7.79

2.7.79

viṃśatyaṃśaṃ ghanasyātha stanyaiḥ saṃmardya saṃpuṭe /
ruddhvātha bhūdhare yantre kṣiptvā laghupuṭaṃ vidhet //

To a twentieth part of mica, having ground it with breast milk and sealed it in a pair of crucibles, / and then placed it in a subterranean apparatus, one should perform a mild incineration.