Surah Al-Nahl (The Bees), Verse 66

وَاِنَّ لَكُمْ فِی الْاَنْعَامِ لَعِبْرَةً نُسْقِیْكُمْ مِّمَّا فِیْ بُطُوْنِهٖ مِنْ بَیْنِ فَرْثٍ وَّدَمٍ لَّبَنًا خَالِصًا سَآىِٕغًا لِّلشّٰرِبِیْنَ ۟

Wa inna lakum fil an'aami la'ibrah; nusqeekum mimmmaa fee butoonihee mim baini farsinw wa damil labanann khaalisan saaa'ighallish shaaribeen

“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.”

Quran 16:66 (Yusuf Ali Translation)