Verse 66

وَإِنَّ لَكُمْ فِى ٱلْأَنْعَـٰمِ لَعِبْرَةً نُّسْقِيكُم مِّمَّا فِى بُطُونِهِۦ مِنۢ بَيْنِ فَرْثٍ وَدَمٍ لَّبَنًا خَالِصًا سَآئِغًا لِّلشَّـٰرِبِينَ

And surely in the livestock, there is a learning experience for you. You drink from their bellies, from the midst of fat and blood, comes pure milk, delicious for the drinkers.