Musnad Ahmad 3085
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn ‘Abbas (رضي الله عنه) said: When The Messenger of Allah (ﷺ) was dying and there were some men in the house including ‘Umar bin al-Khattab (رضي الله عنه), he said: "Come, let me write for you a document after which you will not go astray.” ‘Umar said: The Messenger of Allah is overcome with pain, and we have the Qur'an, and the Book of Allah is sufficient for us. The people in the house disagreed, and they argued. Some of them said: Bring something and let him write for you a document after which you will not go astray. Others agreed with what ʼUmar said. When their disagreement and argument became too much in the presence of the Messenger of Allah (ﷺ), he said: “Get up and leave.” ‘Ubaidullah said: Ibn 'Abbas used to say: What a calamity it was when the Messenger of Allah (ﷺ) was prevented from writing that document for them because of their disagreement and argument.