Ja'far bin Msafr bin Rashid جعفر بن مسافر بن راشد · The Book of Drinks

"We heard Tawus say: 'A man came to Ibn 'Umar and said: Did the Messenger of Allah forbid soaking (fruits) in earthenware jars? He said: 'Yes.' Ibrahim added in his Hadith: "And Ad-Dubba' (gourds).'"