Tirmidhi

Explanation:
1:
By "shirt" here is meant the robe of caliphate (the mantle of caliphate).
The meaning is that if the hypocrites ask you to relinquish the caliphate and seek to depose you from it, do not let this happen, because at that time you will be upon the truth and those demanding your resignation will be upon falsehood.
It was in light of this very statement of the Messenger of Allah (sallallahu alayhi wa sallam) that Uthman (radi Allahu anhu) drank the cup of martyrdom,
but he did not relinquish (the caliphate).

Commentary:
(1)
In this, there is information about the trial that befell Uthman (radi Allahu anhu). It occurred exactly as the Messenger of Allah (sallallahu alayhi wa sallam) had foretold. This is a proof of the Prophethood of the Messenger (sallallahu alayhi wa sallam).

(2)
From this, it is established that Uthman (radi Allahu anhu) was the rightful Caliph.

(3)
When the ruler of a country is maintaining order and administration, it is not permissible to incite turmoil and disorder against him on trivial pretexts—except if he commits crimes such as strengthening disbelief and polytheism (kufr and shirk) or causing the weakness of Islam.

(4)
In this, there is an explicit statement regarding the hypocrisy of the opponents of Uthman (radi Allahu anhu).

(5)
If a narrator makes a mistake or forgets in some hadiths, this alone is not sufficient to declare him weak, especially if he later remembers and corrects it. However, if a person makes frequent mistakes, then due to the weakness of his memory, he is considered weak.