Al-Mu'minun - 23:21

وَإِنَّ لَكُمْ فِي الْأَنْعَامِ لَعِبْرَةً نُّسقِيكُم مِّمَّا فِي بُطُونِهَا وَلَكُمْ فِيهَا مَنَافِعُ كَثِيرَةٌ وَمِنْهَا تَأْكُلُونَ
[23:21]
And most surely there is a lesson for you in the cattle: We make you to drink of what is in their bellies, and you have in them many advantages and of them you eat,
And in cattle (too) ye have an instructive example: from within their bodies We produce (milk) for you to drink; there are, in them, (besides), numerous (other) benefits for you; and of their (meat) ye eat;
And lo! in the cattle there is verily a lesson for you. We give you to drink of that which is in their bellies, and many uses have ye in them, and of them do ye eat;