The Messenger of Allah (ﷺ) prohibited to accept ja'rur and habiq dates as zakat. Az-Zuhri said: These are two kinds of the dates of Medina.

Abu Dawud said: This has also been transmited by Abu al-Walid from Sulaiman bin Kathir from Az-Zuhri.
Sunan Abi Dawud Book 9, Hadith 52
← Previous Hadith Describing the conquest of Khaybar Aisha said: The Prophet (ﷺ) used to send Abdullah ibn Rawahah to the Jews of Khaybar, and he would make an estimate of the palm trees when the fruit was in good condition before any of it was eaten.

Sunan Abi Dawud Book 9, Hadith 51 Next Hadith → The Messenger of Allah (ﷺ) entered upon us in the mosque, and he had a stick in his hand. A man hung there a bunch of hashaf. He struck the bunch with the stick, and said: If the owner of this sadaqah (alms) wishes to give a better one than it, he would give. The owner of this sadaqah will eat hashaf on the Day of Judgment.

Sunan Abi Dawud Book 9, Hadith 53