From his kindness to his relatives:

When his uncle Al-’Abbaas was captured as a prisoner in the Battle of Badr, he did not have a garment to wear, so the Prophet of Allah, sallallaahu ‘alayhi wa sallam, looked for one to give to him. Jaabir ibn ‘Abdullaah (a Companion) narrated that when the prisoners of the Battle of Badr were brought, amongst them Al-’Abbaas, he was not wearing a garment. The Prophet of Allah, sallallaahu ‘alayhi wa sallam, looked for a suitable garment, so they found one with ‘Abdullaah ibn Ubayy (the chief of the hypocrites) that fit him, so the Prophet of Allah, sallallaahu ‘alayhi wa sallam, gave it to Al-’Abbaas. That is why the Prophet of Allah, sallallaahu ‘alayhi wa sallam, wrapped ‘Abdullaah ibn Ubayy in his garment when ‘Abdullaah ibn Ubayy died.