Sura al-Naḥl 16:66

وَإِنَّ لَكُمْ فِى ٱلْأَنْعَٰمِ لَعِبْرَةً نُّسْقِيكُم مِّمَّا فِى بُطُونِهِۦ مِنۢ بَيْنِ فَرْثٍ وَدَمٍ لَّبَنًا خَالِصًا سَآئِغًا لِّلشَّٰرِبِينَ

wa-inna la-kum fī l-anʿāmi la-ʿibratan nnusqīkum mimmā fī buṭūnihi min bayni farthin wa-damin llabanan khāliṣan sāʾighan lil-shāribīna

And verily in cattle (too) will ye find an instructive sign. From what is within their bodies between excretions and blood, We produce, for your drink, milk, pure and agreeable to those who drink it.