Śrāddha-kalpa: Dāna-phala, Medhya/Amedhya Dravya, and Uparāga
Eclipse) Observances (श्राद्धकल्पः—दानफल-मेध्यामेध्य-उपरागविधिः
मानुषास्थीनि संस्पृश्य उपोष्यं शुचिकारणात् / त्रिरात्रमुक्तं सस्नेहान्येकरात्रमतो ऽन्यथा
mānuṣāsthīni saṃspṛśya upoṣyaṃ śucikāraṇāt / trirātramuktaṃ sasnehānyekarātramato 'nyathā
Having touched human bones, one should fast for the sake of purity; if there is oily residue (sneha), three nights are prescribed, otherwise one night.