Sayyiduna Abdullah bin Abbas (may Allah be pleased with them both) narrates that the Prophet (peace and blessings be upon him) said: "Indeed, Allah Almighty divided creation into two parts and placed me in the better of the two. This is what is meant by the words of Allah Almighty: 'The people of the right' and 'the people of the left.' So I am among the people of the right, and I am the best of the people of the right. Then Allah Almighty divided the two parts into houses, and placed me in the best house among them. This is what is meant by the words of Allah Almighty: 'The people of the right, what are the people of the right? And the people of the left, what are the people of the left? And the foremost, the foremost.' So I am among the best of the foremost. Then Allah Almighty divided the houses into tribes and placed me in the best tribe. This is what is meant by the words of Allah Almighty: 'Nations and tribes.' So I am the most God-fearing of the children of Sayyiduna Adam (peace be upon him) and the most honoured of them in the sight of Allah Almighty, and I do not say this out of pride. Then Allah Almighty divided the tribes into households and placed me in the best household among them. This is what is meant by the words of Allah Almighty: 'O People of the House, Allah Almighty intends only to remove impurity from you and to purify you thoroughly.'"
Al-Tabarani recorded it; its chain contains Yahya bin Abd al-Hamid al-Himmani and Abayah bin Rib'i, and both of them are da'if (weak).