Anandakanda 2.1.129

2.1.129

tattāpyaṃ vajramūṣāyāṃ pakvāyāṃ nikṣipettataḥ /
lohasaṃdhānakaraṇaṃ tatsamaṃ tatra nikṣipet //

one should then place that mākṣika into a fired vajramūṣā; / one should place therein an equal amount of a metal-bonding flux;