Śrāddha-kalpa: Dāna-phala, Medhya/Amedhya Dravya, and Uparāga
Eclipse) Observances (श्राद्धकल्पः—दानफल-मेध्यामेध्य-उपरागविधिः
ज्ञेयान्येतानि मेध्यानि दुष्टमेध्यो विपर्यये / मनोवाक्कायमग्निश्च कालश्चैवोपलेखनम्
jñeyānyetāni medhyāni duṣṭamedhyo viparyaye / manovākkāyamagniśca kālaścaivopalekhanam
Know these as ‘medhya’—that which purifies; in the opposite case are the ‘duṣṭa-medhya’. Mind, speech, body, fire, and time are the instruments of cleansing.