The Book of Drinks (Kitab Al-Ashriba)
Muslim :: Book 23 : Hadith 4961
Abu Burda reported on the authority of his father: Allah's Messenger (may peace be upon him) sent me and Mu'adh to Yemen saying: Call people (to the path of righteousness) and give good tidings to the (people), and do not repel them, make things easy for them and do not make things difficult. I (Burda) said: Allah's Messenger, give us a religious verdict about two kinds of drinks which we prepare in Yemen. One is Bit' which is prepared from honey; it is a fermented Nabidh and is strong and turns into wine, and (the second is) Mizr which is prepared from millet and barley. Thereupon, Allah's Messenger (may peace be upon him), who had been gifted with the most eloquent and pithy expressions, said: I forbid you from every intoxicant that keeps you away from prayer.