Anandakanda 2.7.100

2.7.100

<maṇḍūra, śuddhi>
akṣāṅgārairdhamet kiṭṭaṃ lohajaṃ tadgavāṃ jalaiḥ /
secayedakṣapātrāntaḥ ṣaḍvāraṃ ca punaḥ punaḥ //

<Maṇḍūra, purification>
One should blow iron dross with charcoal of Terminalia bellirica; with water from cows / one should quench it within a vessel of Terminalia bellirica wood six times, repeatedly.