Śrāddha-kalpa: Dāna-phala, Medhya/Amedhya Dravya, and Uparāga
Eclipse) Observances (श्राद्धकल्पः—दानफल-मेध्यामेध्य-उपरागविधिः
ब्राह्मं कृतयुगं प्रोक्तं त्रेता तु क्षत्र्रियं युगम् / वैश्यं द्वापरमित्याहुः शूद्रं कलियुगं स्मृतम्
brāhmaṃ kṛtayugaṃ proktaṃ tretā tu kṣatrriyaṃ yugam / vaiśyaṃ dvāparamityāhuḥ śūdraṃ kaliyugaṃ smṛtam
Kṛtayuga is declared the age of the Brahmanas; Tretā, the age of the Kṣatriyas. Dvāpara is said to be the age of the Vaiśyas; and Kaliyuga is remembered as the age of the Śūdras.