وَإِنَّ لَكُمْ فِي الْأَنْعَامِ لَعِبْرَةً ۖ نُّسْقِيكُم مِّمَّا فِي بُطُونِهَا وَلَكُمْ فِيهَا مَنَافِعُ كَثِيرَةٌ وَمِنْهَا تَأْكُلُونَ (21)
(23:21) In fact, there is a lesson for you in the cattle: We give you as a drink of that which is in their bellies, *22 and besides this you get other benefits from them: you eat their flesh
*22) That is, milk. Refer to An-Nahl (XVI): 66 and E.N. 54 thereof.