Skandapurana 5.271.43

5.271.43

alpakṣīrāstathā gāvaḥ kṣīre sarpistathā'lpakam .
sarvabhakṣāstathā viprā nṛpā niṣkaruṇāstataḥ ..
kṛṣyā lajjaṃti vaiśyāśca śūdrā brāhmaṇapreṣakāḥ .. 43 ..

cows yield little milk, and in the milk is little ghee. / Brahmins eat all foods, kings are merciless, / vaiśyas are ashamed of agriculture, and śūdras dispatch brahmins [on errands].