مُسْنَدُ أَحْمَدَ
Musnad Ahmad 2475
Musnad of 'Abdullah bin al-'Abbas bin 'Abdul-Muttalib from the Prophet
It was narrated that Ibn 'Abbas (رضي الله عنه) said: The Messenger of Allah (ﷺ) said: "Whoever sees something in his leader that he dislikes, let him be patient, for whoever differs a handspan from the main body of the Muslims (jama'ah) and dies, his death will be a death of Jahiliyyah.”
Musnad Ahmad 2487Its isnad is saheeh, al-Bukhari (7053) and Muslim (1849)]