It was narrated that Ibn '‘Abbas (رضي الله عنه) said:

‘Ali came out after (visiting) the Messenger of Allah (ﷺ) when he was sick and they said: How is the Messenger of Allah (ﷺ) this morning, O Abu Hasan? He said: He is better this morning, praise be to Allah. Al-'Abbas said: Don't you see? I think that the Messenger of Allah (ﷺ) will die from his sickness, for I know the faces of Banu ‘Abdul-Muttalib when death is imminent. Let us go to the Messenger of Allah and speak to him; if this matter (caliphate) is to be among us, he will clarify it and if it is to be with someone else, we will ask him to give instructions that they be kind to us. ‘Ali said: If he says that it is to be with someone else, the people will never give it to us. By Allah, I will never speak to the Messenger of Allah (ﷺ) about this matter.