Musannaf Ibn Abi Shayba 30:159

Hussain bin Ali narrated to us, from Za’idah, from Hisham, from al-Hasan, who said: The trunks of the palm trees of Paradise are of gold, and their vines are of emerald and jacinth (ruby), and their fronds are of silk garments. The dates emerge like large water jars, sweeter than honey and whiter than milk.