"I heard 'Ata' being asked by a man: 'We travel and drinks are offered to us in the marketplaces, and we do not know what kind of vessels they were prepared in.' He said: 'Every intoxicant is unlawful.' He repeated the question and he said: 'Every intoxicant is unlawful.' He repeated the question and he said: 'It is as I have told you.'"
Sunan an-Nasa'i Book 51, Hadith 60