Anandakanda 1.15.112

1.15.112

prātaḥ puṣyaravau grāhyā nirguṇḍīmūlasaṃbhavā /
tvak śoṣaṇīyā chāyāyāṃ taccūrṇaṃ karṣamātrakam //

On a Sunday with the Puṣya asterism in the morning, the bark from the root
of nirguṇḍī should be taken and dried in the shade; its powder, just one karṣa,