An Nahl, 66 Ayah
16:66
وَإِنَّ لَكُمۡ فِي ٱلۡأَنۡعَٰمِ لَعِبۡرَةٗۖ نُّسۡقِيكُم مِّمَّا فِي بُطُونِهِۦ مِنۢ بَيۡنِ فَرۡثٖ وَدَمٖ لَّبَنًا خَالِصٗا سَآئِغٗا لِّلشَّٰرِبِينَ ٦٦
Wa 'Inna Lakum Fī Al-'An`ām La`ibratan ۖ Nusqīkum Mimmā Fī Buţūnihi Min Bayni Farthin Wa Damin Labanāan Khālişāan Sā'ighāan Lilshshāribīna
And indeed, for you in grazing livestock is a lesson. We give you drink from what is in their bellies - between excretion and blood - pure milk, palatable to drinkers.