Śrāddha-kalpa: Dāna-phala, Medhya/Amedhya Dravya, and Uparāga
Eclipse) Observances (श्राद्धकल्पः—दानफल-मेध्यामेध्य-उपरागविधिः
वैदलानां च सर्वेषां पूर्ववच्छौचमिष्यते / तथा दन्तास्थि दारुणां शृङ्गाणां चावलेखनम्
vaidalānāṃ ca sarveṣāṃ pūrvavacchaucamiṣyate / tathā dantāsthi dāruṇāṃ śṛṅgāṇāṃ cāvalekhanam
The purification of all bamboo and reed articles (vaidalā) is as stated before. Likewise, teeth, bones, wood, and horns should be cleansed by scraping (avalekhana).