بُلُوغُ الْمَرَامِ
Bulugh al-Maram 619
The Book of Zakah
وَعَنْ عَتَّابِ بنِ أُسَيْدٍ - رضى الله عنه - قَالَ: أَمَرَ رَسُولُ اَللَّهِ - صلى الله عليه وسلم -{ أَنْ يُخْرَصَ اَلْعِنَبُ كَمَا يُخْرَصُ اَلنَّخْلُ, وَتُؤْخَذَ زَكَاتُهُ زَبِيبًا } رَوَاهُ اَلْخَمْسَةُ, وَفِيهِ اِنْقِطَاع ٌ [1] .
Attab bin Usaid (RAA) narrated that The Messenger of Allah (ﷺ) commanded us, “Grapevines are to be estimated exactly as palm trees, and its Zakah is taken in raisins.” Related by the five lmams and it has a break in the chain.
Sunnah.com reference: Book 4, Hadith 21