Musannaf Ibn Abi Shaybah 10868 — What is mentioned on estimating date

It is narrated from Sa'id bin al-Musayyib that the Prophet (peace and blessings be upon him) ordered Sayyiduna Attab bin Asid (may Allah be pleased with him) to estimate the grapes just as the date palms are estimated. Then its zakah is to be paid in raisins, just as the zakah of date palms is paid in dried dates. This is the practice of the Prophet (peace and blessings be upon him) regarding date palms and grapes.