ताम्रपात्रे पयःपानम् उच्छिष्टघृतभोजनम् ।
दुग्धं लवणसार्धं च सद्यो गोमांसभक्षणम् ॥
नारिकेलोदकं कांस्ये ताम्रपात्रे स्थितं मधु ।
ऐक्षवं ताम्रपात्रस्थं सुरातुल्यं न संशयः ॥
tāmra-pātre payaḥ-pānam ucchiṣṭa-ghṛta-bhojanam |
dugdhaṁ lavaṇa-sārdhaṁ ca sadyo go-māṁsa-bhakṣaṇam ||
nārikelodakaṁ kāṁsye tāmra-pātre sthitaṁ madhu |
aikṣavaṁ tāmra-pātrasthaṁ surā-tulyaṁ na saṁśayaḥ ||
(Brahma-vaivarta Purāṇa: Brahma-khaṇḍa, 27.22–23)
“Drinking milk in a copper vessel, eating remnant ghee, and milk with salt [all] immediately become [equivalent to] eating cow meat. Coconut water in a white copper [i.e., bell metal or brass] vessel, honey situated in copper vessel, and sugarcane products situated in a copper vessel are equivalent to wine. There is no doubt.”