"Al-Abbas came to the Messenger of Allah (ﷺ), and it is as if he heard something, so the Prophet (ﷺ) stood upon the Minbar and said: 'Who am I?' They said: 'You are the Messenger of Allah, upon you be peace.' He said: 'I am Muhammad bin 'Abdullah bin 'Abdul-Muttalib, indeed Allah created the creation, and He put me in the best of them, then He made them into two groups, so He put me in the best group of them, then He made them into tribes, so He put me in the best of them in tribe, then He made them into houses, so He put me in the best of them in tribe and lineage.'"
Jami` at-Tirmidhi Book 49, Hadith 4
Recognise well the strap and the bag (containing) that and then make an announcement regarding that for one year, but if none recognises it, then spend that and it would be a trust with you; and if someone comes one day to make demand of that, then pay that to him. He (the inquirer) asked about the lost camel, whereupon he said: You have nothing to do with that. Leave that alone, for it has feet and also a leather bag, it drinks water, and eats (the leaves) of the trees. He asked him about sheep, whereupon he said: Take it, it is for you, or for your brother, or for the wolf.
Sahih Muslim Book 31, Hadith 5