Get away from me,” al-Bukhari records it in his Sahih, relying on the authority of `Ubaydullah ibn Abdullah ibn `Utbah ibn Mas`ud.
Abdullah quotes Ibn `Abbas saying that when death approached the Messenger of Allah, his house became full of men including Umar ibn al-Khattab.
The Messenger of Allah said: “Let me write you something that will forever protect you against straying after me.” Umar said: “The Prophet is in a state of delirium, and you have with you the Qur’an; so, the Book of Allah suffices us.”
Those who were present there argued among themselves, and their argument developed into a dispute.
Some of them said: “Come close to the Prophet so that he may write you something that will safeguard you against straying after him,” while others repeated what Umar had said. When the argument and dispute intensified in the presence of the Prophet, the Messenger of Allah said to them: “Get away from me.”
Ibn Abbas used to say: “The calamity, the real calamity, is what discouraged the Messenger of Allah from writing what he wished to write on account of their argument and dispute.”
The authenticity of this hadith is not questioned, nor is the occasion whereupon it came to be. Al-Bukhari quotes it in his treatise on knowledge on page 22, Vol. 1, of his Sahih, and it is recorded in many other books. He quotes it in several places of his Sahih. Muslim, too, quotes it at the conclusion of the Prophet’s will in his Sahih on page 14, Vol. 2. Ahmad narrates Ibn Abbas’s hadith on p. 325, Vol. 1, of his Musnad. It is narrated by all authors of traditions and books of history, each writer editing it yet retaining its gist, reiterating the fact that the Prophet was described as “hallucinating,” or “delirious.” But they also mentioned that Umar had said: “The Prophet has been delirious” just to sanitize the statement and undermine the sentiments of those who found it abominable. Supporting this fact is what Abu Bakr Ahmad ibn Abdul-Aziz al-Jawhari has said in his book Al-Saqifa where he relies on the authority of Ibn Abbas.
Ibn Abbas has said,
 It is the famous “Thursday Calamity” recorded in both al-Bukhari’s and Muslim’s Sahih books.
12] Al-Bukhari, Sahih, Vol. 4, p. 4.
 Ibn Abul-Hadid, Sharh Nahjul Balagha, Vol. 2, p. 20.
by: Dr. Muhammad Tijani al-Samawi