Sayyiduna Abdullah bin Amr (may Allah be pleased with them both) said: When the Prophet (peace and blessings be upon him) had forbidden these vessels, people could not find vessels for their drinks, so he (peace and blessings be upon him) permitted ordinary earthenware jars.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الأشربة والحد فيها / 17480