Rasahridayatantra 7.4.3

7.4.3

tacchuṣyamāṇaṃ hi sabāṣpabudbudān yadā vidhatte kṣaṇabhaṅgurān bahūn /
tadā kṣipettryūṣaṇahiṃgugandhakaṃ kṣāratrayaṃ ṣaḍlavaṇāni bhūkhagau //

Indeed, when that drying liquid produces many short-lived, steamy bubbles,
one should then throw in the three pungents, asafoetida, sulphur, the three alkalis, the six salts, and sal ammoniac and vitriol.