Al-Muṭṭalib ibn Rabīʿah ibn al-Ḥārith reported: “Al-ʿAbbās ibn ʿAbd al-Muṭṭalib once entered upon the Messenger of Allah ﷺ in a state of anger while I was present. The Prophet asked him,

‘What has made you angry?’

He replied, ‘O Messenger of Allah, what is it between us and Quraysh? When they meet one another they greet each other with cheerful faces, but when they meet us their faces are quite different.’

Upon hearing this, the Messenger of Allah ﷺ became angry until his face turned red and he said,

‘By Him in whose hand is my soul, faith will not enter a man’s heart until he loves you for the sake of Allah and His Messenger.’ He then added, ‘People! Whoever harms my uncle has harmed me, for a man’s uncle holds the same rank as his father.’

Al-Tirmidhī remarked, ‘This ḥadith is ḥasan ṣaḥīḥ.’

Aḥmad also narrated it in the Musnad with the same wording through the chain of Ismāʿīl ibn Abī Khālid from Yazīd, and it was likewise transmitted through the chain of Jarīr from Yazīd ibn Abī Ziyād