And indeed for you there is a moral in livestock; We give you a drink extracted from between manure and blood of their udder, pure milk which is delicious for the drinkers.
Milk is a nutrient-rich, white-liquid food produced between manure and the blood (mammary glands) of mammals. It is the primary source of nutrition for infant mammals before they can digest other types of food. the Lord of the universe is clearly explaining to mankind His Favors and Bounties bestowed upon them through his Book Adhikr so that they may become grateful to Him and serve Him alone. Today, the Arabic Quran reading Fujjar are reading these verses. But by rejecting Adhikr, they have become the aimless and heedless people as explained in verse 7: 179. See explanation 6: 142 and 16: 5-6.