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"That they may witness things that are of benefit to them (i.e, reward of Hajj in the Hereafter, and also some worldly gain from trade, etc.), and mention the Name of Allaah on appointed days (i.e, 10th, 11th, 12th, and 13th day of Dhul-Hijjah), over the beast of cattle that He has provided for them (for sacrifice) (at the time of their slaughtering by saying: Bismillah, WAllaahu-Akbar, Allaahumma Minka wa Ilaik), Then eat thereof and feed therewith the poor who have a very hard time." [Al-Hajj (22):28]

Narrated Zaid bin Khalid Al-Juhani:

A man asked the Prophet about the picking up of a "Luqata" (fallen lost thing). The Prophet replied, "Recognize and remember its tying material and its container, and make public announcement (about it) for one year, then utilize it but give it to its owner if he comes." Then the person asked about the lost camel. On that, the Prophet got angry and his cheeks or his Face became red and he said, "You have no concern with it as it has its water container, and its feet and it will reach water, and eat (the leaves) of trees till its owner finds it." The man then asked about the lost sheep. The Prophet replied, "It is either for you, for your brother (another person) or for the wolf." [The Book of Knowledge Volume 1, Book 3, Hadeeth 91]