Jami` at-Tirmidhi 644
جامع الترمذي#644Da'ifAttab bin Asid narrated that :the Prophet said about Zakat on grapevines: "They are to be assessed just as the date-palm is assessed. Then its Zakat is paid in raisins just as the Zakat for the date-palm is paid in dried dates
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Ahmad Muhammad ShakirDaif
Al-AlbaniDaif
Zubair Ali ZaiDaif
In-book reference: 7:28