Abu Dawud Book 20, Hadith Number 3700.

Chapter : Drink made from unripe dates.

Narated By N/A : Qatadah said on the authority of Jabir b. Zaid and ‘Ikrimah that they disapproved of the drink made exclusively from unripe dates. This they reported on the authority of Ibn ‘Abbas. Ibn ‘Abbas said: I am afraid it may not be muzza’ from which (the people of) ‘Abd al-Qais were prohibited. I asked Qatadah: What is muzza’? He replied: Drink of dates made in a green jar and a vessel smeared.