Ashtangasamgraha 39.5

39.5

atha bahiḥ parimārjanastrividho madhyo mṛdustīkṣṇaśca |

tasya pākavidhiḥ śaradi śucirupoṣitaḥ śuklavāsāḥ praśaste 'hani praśastadeśajātaṃ madhyamavayasamanupahataṃ mahāntaṃ kālamuṣkakaṃ surāpalalasumano 'kṣatādibhiścaturdiśaṃ baliṃ kṛtvā pradakṣiṇaṃ cābhyarcyainamadhivāsayet ||

sallakībadarībilvapalāśatiniśodbhavāḥ ||

Now, the [caustic for] external application is of three kinds: moderate, mild, and sharp. / Its preparation method: In autumn, being pure, fasting, dressed in white clothes, on an auspicious day, having offered oblations in the four directions with wine, ground grain, flowers, unbroken grains, and the like to a large kālamuṣkaka tree that is grown in a commendable region, of middle age, and uninjured, and having worshiped it while circumambulating it sunwise, one should consecrate it. / Arising from sallakī, badarī, bilva, palāśa, and tiniśa.