Skandapurana 5.271.22

5.271.22

sarvā ghaṭasravā gāvo mahiṣyaśca caturguṇāḥ ..
prayacchaṃti tathā kṣīramuṣṭryastāsāṃ caturguṇam .. 22 ..

All the cows yield a whole jar of milk, the female buffaloes four times that much, / and likewise female camels yield four times the milk of those buffaloes;