Atharvaveda 8.7.12

8.7.12

mádhuman mū́laṃ mádhumad ágram āsām mádhuman mádhyaṃ vīrúdhāṃ babhūva |
mádhumat parṇáṃ mádhumat púṣpam āsāṃ mádhoḥ sámbhaktā amŕ̥tasya bhakṣó ghr̥tám ánnaṃ duhratāṃ gópurogavam ||12||

Rich in sweets the root, rich in sweets the tip of them, rich in sweets was the middle of the plants; rich in sweets the leaf, rich in sweets the flower of them; partaking of sweet, a drink of nectar (amṛ́ta), let them milk out ghee, food, with milk (gó-) as chief (-purogavá).