The best of your dates is the Barni; it removes disease and has no disease in it

It is narrated from Sayyiduna Anas bin Malik (may Allah be pleased with him) that the delegation of Abd al-Qays from the people of Hajar came to the Messenger of Allah (peace and blessings be upon him). He (peace and blessings be upon him) turned towards them and named the various kinds of their dates, until he had counted out all the kinds of their dates. A man among them said: O Messenger of Allah, may my father and mother be ransomed for you, had you been born in the land of Hajar, you would not have known more than you do at this moment. I bear witness that you are the Messenger of Allah. He (peace and blessings be upon him) said: "When you sat down with me, your land was raised up before me, and I looked at its nearest and its farthest parts. The best of your dates is the barni; it removes disease and there is no disease (harm) in it."
This hadith has a sahih (authentic) chain of narration, but the two Shaykhs (Bukhari and Muslim) did not record it.

It is narrated from Sayyiduna Abu Sa'id al-Khudri (may Allah be pleased with him) that the Messenger of Allah (peace and blessings be upon him) said: "The best of your dates is the 'barni'; it drives out disease and there is no disease (harm) in it."