The Prophet ﷺ permitted the use of clay jars that had not been coated with pitch.
أخبرنا إبراهيم بن سعيد قال حدثنا سفيان قال حدثنا سليمان الأحول عن مجاهد عن أبي عياض
أن النبي ﷺ رخص في الجر غير مزفت
No references are available.
Bukhari narrated it in the Book of Drinks, chapter on the Prophet's ﷺ permission regarding vessels and containers after the earlier prohibition, hadith no. 5593, and Muslim in the Book of Drinks, chapter on the prohibition of steeping dates and grapes for making nabidh in tarred vessels and gourds... etc., hadith no. 2000, from the hadith of Sufyan bin Uyayna with the same chain, and it is also in Al-Kubra, hadith no. 5160.