A man came to Messenger of Allah ﷺ and asked about Al-Luqata (a fallen thing). The Prophet ﷺ 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 ﷺ said, "It is for you, your brother or the wolf." The man said "What about a lost camel?" The Prophet ﷺ 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?" (Using translation from Bukhārī 2372)
"اعْرِف عِفاصَها، ووكاءَها، ثُمَّ عرِّفها سَنةً، فإِن جاءَ صاحبُها، وإلّا فشَأنَكَ بها، قِيلَ: فَضَالَّةُ الغَنمِ؟ قال: هي لك، أو لأخيك، أوْ للذئب، قِيلَ: فَضَالَّةُ الإِبل؟ قال: ما لك ولها؟ مَعَها سقَاؤُها وحِذاؤُها تَرِدُ الماءَ، وتأكلُ الشجرَ حتّى يلْقاها ربُّها" .