Zayd bin Thabit (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) granted a concession in the 'ariyyah sale, that "the members of a household give dried dates according to the estimate of that fruit and eat it as fresh, moist dates (rutab)."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب البيوع / 10659