Abu Ishaq narrated that Sayyiduna Qutham bin al-Abbas (may Allah be pleased with them both) was asked: "Why did Ali (may Allah be pleased with him) inherit from the Messenger of Allah (peace and blessings be upon him) rather than al-Abbas (may Allah be pleased with him)?" He said: "Because he was the first of us to join him (peace and blessings be upon him) and the one who stayed closest to him (peace and blessings be upon him)."
Hadith Referenceالمعجم الكبير للطبراني / باب القاف / 16135
Abu Ishaq narrated that Sayyiduna Qutham bin al-Abbas (may Allah be pleased with them both) was asked: "How did Ali (may Allah be pleased with him) inherit from the Messenger of Allah (peace and blessings be upon him) rather than all of you?" He said: "Indeed, he was the first to join him (peace and blessings be upon him) and the one who stayed closest to him (peace and blessings be upon him)."
Hadith Referenceالمعجم الكبير للطبراني / باب القاف / 16136