The Great Epic of the Bhārata dynasty 7.202.141

7.202.141

ūrubhyāmityādiślokatrayeṇa punastanūdvayaṃ vibhajate - ūrubhyāmiti | tatrādyaśloke'gniriti bhoktā soma iti ca bhogyamucyate | atra mukhabāhūrupādebhyo jātāścatvāro varṇāḥ karmaphalabhūtavṛṣṭyādicāreṇa samastaprāṇikalyāṇakaratvādrudrasya śivā tanūrityucyate | tatra ūruśabdena tadārabhyādhastanaḥ pradeśa ucyate | tatrārdhamāgneyaṃ pariśeṣādardhaṃ somaḥ vaiśyo bhoktā śūdro bhojyam ityarthaḥ | ātmano rudrasya tathā ca ūrubhyāmupari ardhaṃ śirobhāgo brāhmaṇo'gnirbhoktā pariśeṣādardhaṃ bāhubhāgaḥ kṣatriyaḥ somo bhojyaṃ tathā punarapyetaducyate ardhamāgneyamardhaṃ soma iti tena brahmakṣatre bhoktārau vaiśyaśūdrau bhojyau tathā ca bhoktrā bhojyaṃ rakṣyaṃ bhojyena ca bhoktā vardhanīya iti tathā ca cāturvarṇyaṃ trailokyasthitihetutvādātmano rudasya śivā tanurityarthaḥ ||