Sahih Bukhari Volume 3, Book 42, Hadith 2373

حَدَّثَنَا إِسْمَاعِيلُ، حَدَّثَنَا مَالِكٌ، عَنْ رَبِيعَةَ بْنِ أَبِي عَبْدِ الرَّحْمَنِ، عَنْ يَزِيدَ، مَوْلَى الْمُنْبَعِثِ عَنْ زَيْدِ بْنِ خَالِدٍ ـ رضى الله عنه ـ قَالَ جَاءَ رَجُلٌ إِلَى رَسُولِ اللَّهِ صلى الله عليه وسلم فَسَأَلَهُ عَنِ اللُّقَطَةِ، فَقَالَ ‏"‏ اعْرِفْ عِفَاصَهَا وَوِكَاءَهَا، ثُمَّ عَرِّفْهَا سَنَةً، فَإِنْ جَاءَ صَاحِبُهَا وَإِلاَّ فَشَأْنَكَ بِهَا ‏"‏‏.‏ قَالَ فَضَالَّةُ الْغَنَمِ قَالَ ‏"‏ هِيَ لَكَ أَوْ لأَخِيكَ أَوْ لِلذِّئْبِ ‏"‏‏.‏ قَالَ فَضَالَّةُ الإِبِلِ قَالَ ‏"‏ مَالَكَ وَلَهَا مَعَهَا سِقَاؤُهَا وَحِذَاؤُهَا، تَرِدُ الْمَاءَ وَتَأْكُلُ الشَّجَرَ، حَتَّى يَلْقَاهَا رَبُّهَا ‏"‏‏.

Narrated By Zaid bin Khalid : A man came to Allah's Apostle and asked about Al-Luqata (a fallen thing). The Prophet said, "Recognize its container and its tying material and then make a public announcement about it for one year and if its owner shows up, give it to him; otherwise use it as you like." The man said, "What about a lost sheep?" The Prophet said, "It is for you, your brother or the wolf." The man said "What about a lost camel?" The Prophet said, "Why should you take it as it has got its water-container (its stomach) and its hooves and it can reach the places of water and can eat the trees till its owner finds it?"