﴿ وَإِنَّ لَكُمْ فِى ٱلْأَنْعَٰمِ لَعِبْرَةًۭ ۖ نُّسْقِيكُم مِّمَّا فِى بُطُونِهِۦ مِنۢ بَيْنِ فَرْثٍۢ وَدَمٍۢ لَّبَنًا خَالِصًۭا سَآئِغًۭا لِّلشَّٰرِبِينَ ﴾

“And, behold, in the cattle [too] there is indeed a lesson for you: We give you to drink of that [fluid] which is [secreted from] within their bellies between that which is to be eliminated [from the animal's body] and [its] life-blood: milk pure and pleasant to those who drink it.”

(And lo! in the cattle there is a lesson for you. We give you to drink of that which is in their bellies, from betwixt the refuse and the blood), We extract (pure milk palatable to the drinkers) savoury to the drinkers.