"Sahl bin Abi Hathmah came to a gathering of ours, and he narrated that the Messenger of Allah would say: "When you make an assessment, then take it and leave a third, if you do not leave a third, then leave a quarter."  

أَنَّ رَسُولَ اللَّهِ ﷺ كَانَ يَقُولُ إِذَا خَرَصْتُمْ فَخُذُوا وَدَعُوا الثُّلُثَ فَإِنْ لَمْ تَدَعُوا الثُّلُثَ فَدَعُوا الرُّبُعَ قَالَ وَفِي الْبَابِ عَنْ عَائِشَةَ وَعَتَّابِ بْنِ أَسِيدٍ وَابْنِ عَبَّاسٍ  

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."  

أَنَّ النَّبِيَّ ﷺ كَانَ يَبْعَثُ عَلَى النَّاسِ مَنْ يَخْرُصُ عَلَيْهِمْ كُرُومَهُمْ وَثِمَارَهُمْ وَبِهَذَا الإِسْنَادِ أَنَّ النَّبِيَّ ﷺ قَالَ فِي زَكَاةِ الْكُرُومِ إِنَّهَا تُخْرَصُ كَمَا يُخْرَصُ النَّخْلُ ثُمَّ تُؤَدَّى زَكَاتُهُ زَبِيبًا كَمَا تُؤَدَّى زَكَاةُ النَّخْلِ تَمْرًا