Abu Dawud

Benefits and Issues:
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The Arabian Peninsula is called a “peninsula” (jazirah) because it is surrounded by the Indian Ocean, the Red Sea, the Mediterranean Sea, and the Tigris and Euphrates rivers. Since ancient times, it has been the homeland of the Arabs. Its boundaries in length stretch from Aden to the outskirts of Syria, and from Jeddah to the countryside of Iraq.
(: Nayl al-Awtar, Chapter: Prohibition of the People of the Covenant from Residing in the Hijaz, 8/72)
Since this is the first center of Islam, and from here Islam was to be spread throughout the world, it was and remains necessary to keep it safe from the deceit of the Jews and Christians. Through their conspiracies, the Jews distorted the face of Christianity, and both of them—indeed, even the Magians and polytheists—attempted to introduce innovations into Islam from the very beginning of Islam.

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The incident of forgetting the third matter pertains either to Ibn Abbas (radi Allahu anhu) or to Sufyan ibn ‘Uyaynah. According to Hafiz Ibn Hajar, it is more likely that Ibn ‘Uyaynah said, “I forgot the third matter.”
What was that third matter which Ibn ‘Uyaynah forgot? There is an indication in the Muwatta of Imam Malik that the third matter could be: “Do not make my grave an idol after me.”
Just as in the narration of the Muwatta, this expulsion is mentioned along with the Jews, or as in the narration of Anas (radi Allahu anhu), the third instruction could be to take care of prayer and slaves.
(: Fath al-Bari, Book of Maghazi, Chapter: The Illness and Death of the Prophet ﷺ)
In the meaning of expelling the polytheists from the Arabian Peninsula, all idol-worshipping polytheists, Jews, Christians, and Magians are included, and it is obligatory to expel them from here.

Benefit:
In this hadith, there is a mention of the severity of the fever a few days before the death of the Noble Prophet sallallahu alayhi wa sallam. In this hadith, it is stated that he sallallahu alayhi wa sallam first said: "Bring me paper," then what he intended to dictate, he expressed verbally. Some misguided people misuse this hadith, which is not correct. The Prophet sallallahu alayhi wa sallam was a human being; he sallallahu alayhi wa sallam would also experience fever and feel its pains. The noble Companions radi Allahu anhum were greatly grieved by his sallallahu alayhi wa sallam separation. It is also established from this that making a bequest (wasiyyah) in writing and verbally—both forms are valid.